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RCA CRC U.S. NAVY 6AC7 VACUUM TUBE SINGLE 1943 TESTED CALIBRATED B&K747B

Ende: 27.06. 2023 14:31:54 am Dienstag
  • Zustand: Neu: Sonstige
  • Preis: 5.31 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 325672500554
  • Verkäufer: mercedesman6572 (16340|99.7%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Tonopah, Arizona USA
  • Versand nach: Worldwide
  • Versandkosten: 18,57 EUR
  • bei ebay
  • Beschreibung

      TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES FOR SALE THESE ARE THE TUBE/TUBES FOR SALE:    MANUFACTURER:                              RCA  PRODUCTION CITY:                                    USA TUBE TYPE:   US NAVY 6AC7 DESIGNATION  MILITARY SPEC YEAR:     1943 MONTH:    MAY Date code match    SINGLE SILK SCREEN CONDITION %:                    100% MICA:   2 PLATES:   ? GM%:   123%, SINGLE/PAIR/QUAD/MULTI:   SINGLE GETTER:                                                         ?  GETTER DATE CODE                                                  MAY 1943 Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD      55-65 = ?     65 -100 = Good     100-120+ = NOS        I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. ALL CUSTOMERS PLEASE READ ALL NOTES BEFORE BUYING FROM ME !!1.  RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer.If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button.Sound quality is tremendously SUBJECTIVE. For tubes returned for noise or sound quality of any kind you pay for the shipping we refund the purchase. We refund the price of the item NOT THE SHIPPING COST. If we sent the wrong tube we will of course pay for return shipping. For any tubes that are DOA we require that you send a us a picture of the shipping box to show us the damage. We test EVERY tube sent out and none should be DOA unless broken in shipping.2.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT.3.  UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!!4. TESTING: I test all tubes that I sell in one way or another, or I will state untested. I have a B&K 747 tube tester. This is a mutual conductance tester. It give a percentage value of gm for the tube under test and checks for shorts and grid emissions. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. One evaluation is a screen shot of the tube with a high voltage applied to the plate. This helps the buyer see the linearity of the tube in question at the highest voltage the tube will see in a real circuit. The Curve tracer steps the triode through 10 gate/grid voltages starting with -10 volts and going to 0 volts. The lines show how the tube conducts throughout that range. At 0 volt the tube is at max conduction and is the top line on the display. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. I give those numbers for you in the Item condition box. To further help the buyer I also include the Design values, for gm and ma readings in the table. This can then be compared to other tube sellers using inferior test methods such as Hickok,  Amplitrex, and other testers. The Tektronix curve tracer gives values within 3% of the actual value. The very best portable testers only can approach 10% accuracy.5.    Please note: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else.6. VERY IMPORTANT!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage.7. I dont check each and every tube for noise or tone. This is SUBJECTIVE and it is too time consuming. If you dont like the noise level or the tone we offer a hassle free refund policy.  International customers note:1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws.3 International buyers if you bought more than one item and want combined shipping it will ship in 2 days.4. And all the Angels sang because the heavenly music was playing and it was turned all the way up. Listing and template services provided by inkFrog

NIB/NOS GE General Electric 6AC7/6134 Radio Vacuum Tube-UNTESTED

Ende: 27.06. 2023 01:12:24 am Dienstag
  • Zustand: Gebraucht
  • Preis: 11.26 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 115787206577
  • Verkäufer: snilloc_products (211|100.0%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Ashburn, Virginia USA
  • Versand nach: US
  • Versandkosten: 25,96 EUR
  • bei ebay
  • Beschreibung

    NIB/NOS GE General Electric 6AC7/6134 Radio Vacuum Tube-UNTESTED. NIB/NOS GE General Electric 6AC7/6134 Radio Vacuum Tube-UNTESTED NIB/NOS GE General Electric 6AC7/6134 Radio Vacuum Tube-UNTESTED. ***ALL TUBE ITEMS ARE UNTESTED*** OUR TUBES/BOXES/ITEMS APPEAR NOS IN MOST ALL CASES AND ARE ASSUMED AND LISTED THIS WAY IF SO. IF THEY ARE MARKED USED THEY WILL BE NOTED AS USED IN THE TITLE SOME BOX DAMAGE MAY BE PRESENT. BOX PICTURE IS REPRESENTATIVE OF STOCK-ACTUAL BOX AND ITEM MAY VARY We work very hard to make sure EVERY CUSTOMER IS 100% SATISFIED. If you have any questions, please dont hesitate to contact us. PaymentShippingReturnsPayment PaymentShippingReturnsPayment We only accept payment through EBAY and through EBAY local pickup methods (rare). We will not accept funds or return funds outside of EBAY. PaymentShippingReturns Shipping PaymentShippingReturns Shipping We ship primarily using UPS ground and occasionally USPS Priority and First Class. Due to cost increases and recent spikes in inefficiency with USPS, we will default to UPS if an item is cost-prohibitive or bought during holiday shipping periods where USPS is even more inefficient.If you have a shipping preference that needs to be respected, please let us know. We try to ship economically and will return any overestimated cost to you after shipping. Your countrys Custom Duties or any fees imposed on a shipment are Customers responsibility. Returned purchases refused due to custom duties may incur additional return shipping fees that will be subtracted from your refund. This excess shipping cost is not refundable. We do not mark purchases as Gift. Packages with free shipping, refused or returned (with no return policy) or returned with wrong shipping information provided, refund will be minus our actual ship cost. We recycle boxes when possible, but our packing materials are typically top-notch and you can be assured we pack with care. We frequently use Ranpak Ready Roll Protective Paper for void filler and protection and Scotch Flex & Seal Shipping Roll Self-Sealing Padded Mailers for smaller objects or unusual sizes. We also use shipping roll remnants to protect items and act as a void filler. Suffice it to say, we pack carefully, and havent had a damaged item since using these.PaymentShippingReturns ReturnsPaymentShippingReturns Returns Please read our Return/Refund Policy and can be seen under Returns on top, with purchase customer is agreeing to abide by our return/refund policy and eBays Return Policy - (You must return an item in the same condition as it was received, not used or altered in any way. You must also include, in the same condition as it was received with all original packaging), otherwise return policy will be void and refund refused. We have the right to refuse any return/refund that does not meet with the return policy. If an item is returned with missing or detached tags, bags, packaging, informational booklets, etc, and no longer in same condition as received, we are entitled to deduct some portion of the refund to cover loss of value as per eBays return policy and ours

Small Lot of Assorted Vintage Vacuum Tubes + Boxes 6ES9 6AH9 6AC7 15KY8A 6AG9

Ende: 26.06. 2023 01:00:00 am Montag
  • Zustand: Gebraucht
  • Preis: 9.06 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 334919115907
  • Anzahl Gebote: 0
  • Verkäufer: sellrbuy280 (1099|100.0%)
  • Verkäufertyp: Privat
  • Ort: Ronda, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 56,71 EUR
  • bei ebay
  • Beschreibung

    For sale is this small lot of untested vacuum tubes + their boxes. I have many more tubes if you are interested.

A pairs 6SJ7 6J8 6AC7 717A TUBES US GE IN ORIGINAL BOX.

Ende: 25.06. 2023 05:50:58 am Sonntag
  • Zustand: Gebraucht
  • Preis: 27.18 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 166182740825
  • Anzahl Gebote: 0
  • Verkäufer: vtubes6 (1186|97.7%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: CHINA China
  • Versand nach: Worldwide
  • Versandkosten: 8,24 EUR
  • bei ebay
  • Beschreibung

    --------------Description -------------- A pairs 6SJ7 TUBES US GE IN ORIGINAL BOX. 6SJ7 can replace 6J8 6AC7 717A The same batch B4 I had test them in VT-7, the value is 75 78 (6SJ7 IN VT-7 THE Mini-mum value is 40) Please check my picture for more details # 2322 --------------Payment-------------- The terms of payment we accept: PAYPAL If you have any questions, please feel free to contact me --------------Shipping-------------- When I receive your payment. I will send your items within 1-3 days We provide professional packaging services to ensure that you receive your items safely. --------------About postage-------------- If you purchase multiple items from our store, we offer combined shipping to save you money. --------------About us-------------- Quality merchandise and customer service is our primary concern. Many of our customers come back to us again and again because of our integrity, fair prices, and excellent customer service, regardless of where they live in the world --------------Contact us-------------- Hello.If you have any questions about the goods, please let me know. I will contact you actively. Give you a reasonable solution. I hope we can have a good deal. thank you very much. :?

US HYTRON 6SJ7GT 6J8 6AC7 717A match pair TUBES Square Getter Silver Top

Ende: 25.06. 2023 00:21:30 am Sonntag
  • Zustand: Gebraucht
  • Preis: 64.96 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 285339861329
  • Anzahl Gebote: 0
  • Verkäufer: hifi-vtube (63|100.0%)
  • Verkäufertyp: Privat
  • Ort: ?? China
  • Versand nach: Worldwide
  • Versandkosten: 8,24 EUR
  • bei ebay
  • Beschreibung

    - ------------- Description - ------------- US HYTRON 6SJ7GT match pair TUBES 6SJ7 can replace 6J8 6AC7 717A Square Getter Silver Top Iron Base This test value is from the TV-7 tester (6SJ7 MINI-mum value is 40) Please check my picture for more details Z6034 Suitable for speaker, amplifier,CD player etc. - ------------- Payment - ------------- The terms of payment we accept: PAYPAL If you have any questions, please feel free to contact me - ------------- Shipping - ------------- When I receive your payment. I will send your items within 1-3 days We provide professional packaging services to ensure that you receive your items safely. - ------------- About postage - ------------- If you purchase multiple items from our store, we offer combined shipping to save you money. - ------------- About us - ------------- Quality merchandise and customer service is our primary concern. Many of our customers come back to us again and again because of our integrity, fair prices, and excellent customer service, regardless of where they live in the world - ------------- Contact us - ------------- Hello.If you have any questions about the goods, please let me know. I will contact you actively. Give you a reasonable solution. I hope we can have a good deal. thank you very much. :?

1x Type 6AC7 Metal Vacuum Tube NOS/NOS Testing or Near NOS Testing

Ende: 22.06. 2023 19:30:28 am Donnerstag
  • Zustand: Gebraucht
  • Preis: 6.36 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 175766294233
  • Verkäufer: harli160 (3294|99.6%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Kingman, Arizona USA
  • Versand nach: Worldwide
  • Versandkosten: 16,18 EUR
  • bei ebay
  • Beschreibung

    Here we have 1x Type 6AC7 Metal Vacuum Tube NOS/NOS Testing or Near NOS Testing We have many in stock of various makes. All have been tested on a Calibrated Hickok 800a Vacuum Tube tester. They all test near to or NOS in testing. Some are new old stock in the box, some are used. When you buy one I will just pull one from the box. The picture is a stock photo. Graphics range from Excellent to quite Faded. Thank you for looking Photos Photos shown in this listing are of the actual item for sale. NO STOCK PHOTOS USED unless otherwise stated. All our items, including changeable parts like bulbs, etc are security marked. If an item is returned these marks that have been hidden throughout the unit are checked before any refunds are given. ( sorry about this , but there are those out there that think it is clever to change parts and return faulty ones. In photographs we occasionally use props to display items in the best light possible. These props, like my white board, lighting , kitchen table, Train track, boxes, my left or right hand are not including unless otherwise stated in the listing. ( Sorry for you having to read this but you would be surprised how many people think the items come with my table or a part of my anatomy that I have accidentally caught on camera.) In the first few lines you will see what you are bidding on, i.e... “This auction is for a ?????????? If it does not say base, stand , table , in either the main body of the description or title ... then they are NOT included in the sale. VACUUM TUBE TESTING I do not Sell Just Passable Vacuum Tubes. All tubes purchased have loads of life left in them. Low and weak tubes are unceremoniously thrown in the nearest trash can, unless they are collectors Items. When using the word “Matched” it means in test results rather than in cosmetic looks. Whilst I endeavor to put tubes together from the same year and look the same, this is not always the case. I may have the same tube but from differing years matched up in test results, which means they may cosmetically or internally look a little different... The numbers/letters in parentheses are Equivalents put in to help people to find the correct tube. If it does not say MATCHED then please do not consider them to be such. If you need to know the test results that I get then please just ask. I do not publish test results in the listing as what I get, and what someone else might get can be different. I use a TV7/U military spec Tester which is calibrated. I have 4 of these machines and all display a slightly differing value if I test the same tube, as two testers are never the same. So this shows what I get, and what you get may be slightly different. I also sometimes use a Hickok 752 for testing If I state any values they are for a guide only. All tubes have passed the Gas and short tests. Rectifiers and Diode tubes do not have Transconductance values. Please have a look at the pictures for the cosmetic condition. Please realize when buying antique, vintage or used equipment that they cannot be in an absolute mint or absolute perfect condition, they might need some service, now or later. I take lots of pictures so you can see cosmetics. Use the zoom function and have a good look. It is impossible to describe every scratch, scuff or mark. So take a good look. That is what they are there for. We check and describe the as much of the functionality as we can. If not Fully tested , then items are not tested to the full extent and may have something wrong that I have not discovered. If Fully tested then that is what they are. Fully working. IF YOURE UNHAPPY WITH AN ITEM ... Contact us via messaging. I am human... I make mistakes once in a while. I Run this store on eBay.I am not a huge retail outlet. I try to resolve any issue to both our best interests. MAILING I Try to Mail out within 24 hours of your payment. Where I live the Post office is closed on a Saturday, so Purchases paid for on a Friday will go out on Monday as I work Fridays and do not get home until after the PO is closed. GRADING OF CDs and RECORDS What do the GRADING MEAN? NEW - Unopened and brand new, sealed. Like NEW - Used but no obvious signs of use. ( May be very light Scratching but not noticeable ) ( or the Case/Cover may be Scuffed a little) EXCELLENT- Very light ware to both the CD / Record or CASE/ Cover. Very GOOD PLUS - USED, Some Light Scratching to either the case or CD/Record. Plays Well. Light scratching to the case/ Cover. Very GOOD - USED Light Scratching to both the Case and CD/Record. Slightly Heavier than Above. GOOD PLUS. Light and medium scratching. CD still plays Well . Cover is in Good condition but has normal wear and tear. GOOD. Heavy use. Medium to heavy scratching. CD/Record still Plays ok. May jump or you will hear scratching on the record., or if this is in grading is in regard to the case/Cover then there may be cracks in the case or the cover is Torn , or has rips along its edges or scuffed quite badly. Fair - The CD? Record plays, sometimes skips. Heavy scratching to the disc. In regards to the case or cover, then the case/ Cover is just holding itself together. Poor. CD/Record does not play. In regards to the case/ Cover then this grading means the case or sleeve is badly torn, scuffed, cracked and is falling apart. generally poor condition. Please remember I am not a professional grader. I am quite harsh on what is good and bad. So some items that I may describe as Fair... may be good or above. It is just my opinion and I would rather paint a bleaker picture of something rather than saying it is better than it is. Return policy If in the main body of my listing I sell something AS IS. This means That I have tested something NOT TO ITS FULL EXTENT. Therefore I cannot be 100% sure of its working ability when you get it. In these cases it is best bidding on it as if it was broken. If I say UNTESTED. then I have not test it. Or have only gone so far to test it. I am not like other sellers who say untested and am selling something I know to be broken. I have sold many items as UNTESTED and they have worked perfectly well for the buyer. On the other hand I have sold items that have ended up not working at all. So to recap. You buy items that are untested or Part tested at your own risk. There are NO RETURNS on things I cannot test to the full extent. It is up to you to make a judgment call and decide if it is worth the risk of bidding. FULL REFUNDS ARE AVAILABLE of the purchase cost and original shipping cost if the item you receive is grossly misrepresented or if an item advertised as working arrives in a non-working condition We will pay for return shipping, in some cases. But in most cases the return shipping is the sole responsibility of the BUYER I accept returns unless stated otherwise in the description. We insure everything, and we have to pay for this insurance. I also pack well. If you still receive an item that has been damaged please let us know so we can start an insurance claim. This is a process, and it takes time. I will then gladly refund your money. This is the reason for insurance, and I think it is only fair to ask the carrier responsible for the damage to pay for it. Please be patient enough for this process. If you are demanding your money back and are not prepared to go wait for the insurance process or fail to present the item for the PO or Carrier then it is also only fair you pay for the return shipping because we now cannot claim on the insurance once it leaves you. I am sure you will agree that it defeats the purpose of us insuring anything if no one is going to use the claim process. Should the Claim process fail , for no fault of ours or yours, then we will certainly refund you your money in full. By bidding on this item you agree to these stipulations and to follow the instructions of the post office, or carrier. They will normally want to see the item AND PACKING. If you throw away the packing then this makes the insurance VOID. Thank you for your cooperation and understanding. DISCLAIMER/WAIVER OF LIABILITY Regardless of the origin of the equipment, documentation provided or identification appearing upon the equipment, the equipment described and offered here is in no way certified for, recommended for, or offered for any specific use. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, indicates their acknowledgment of, and agreement to the terms of this disclaimer. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. For more information regarding taxes, etc. for some countries please check you local countries Web site. Most have one. •These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.” •We do not mark merchandise values below value or mark items as ‘gifts’ , demos, etc. - US and International government regulations prohibit such behavior. PLEASE DO NOT ASK Please check with your countrys customs office to determine what these Additional costs will be prior to bidding or buying.

Ken-Rad Electronic Tube JAN-CKR-6AC7 VT-112

Ende: 21.06. 2023 23:43:55 am Mittwoch
  • Zustand: Neu
  • Preis: 13.68 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 325664391005
  • Verkäufer: 925ella (4450|99.1%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Concord, California USA
  • Versand nach: US
  • Versandkosten: 24,08 EUR
  • bei ebay
  • Beschreibung

    Test good

Small Lot of Assorted Vintage Vacuum Tubes + Boxes 6ES9 6AH9 6AC7 15KY8A 6AG9

Ende: 20.06. 2023 02:19:38 am Dienstag
  • Zustand: Neu
  • Preis: 9.1 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 235050559404
  • Anzahl Gebote: 0
  • Verkäufer: sellrbuy280 (1099|100.0%)
  • Verkäufertyp: Privat
  • Ort: Ronda, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 57,35 EUR
  • bei ebay
  • Beschreibung

    For sale is this small lot of untested vacuum tubes + their boxes. I have many more tubes if you are interested.

KEN-RAD 6SJ7 6J8 6AC7 717A US match pair TUBES

Ende: 19.06. 2023 21:11:08 am Montag
  • Zustand: Gebraucht
  • Preis: 20.02 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 385683341364
  • Anzahl Gebote: 0
  • Verkäufer: hifi-tubes (120|100.0%)
  • Verkäufertyp: Privat
  • Ort: ?? China
  • Versand nach: Worldwide
  • Versandkosten: 8,33 EUR
  • bei ebay
  • Beschreibung

    - ------------- Description - ------------- KEN-RAD 6SJ7 US match pair TUBES 6SJ7 can replace 6J8 6AC7 717A This test value is from the TV-7 tester (6SJ7 MINI-mum value is 40) Please check my picture for more details [8017] Suitable for speaker, amplifier,CD player etc. - ------------- Payment - ------------- The terms of payment we accept: PAYPAL If you have any questions, please feel free to contact me - ------------- Shipping - ------------- When I receive your payment. I will send your items within 1-3 days We provide professional packaging services to ensure that you receive your items safely. - ------------- About postage - ------------- If you purchase multiple items from our store, we offer combined shipping to save you money. - ------------- About us - ------------- Quality merchandise and customer service is our primary concern. Many of our customers come back to us again and again because of our integrity, fair prices, and excellent customer service, regardless of where they live in the world - ------------- Contact us - ------------- Hello.If you have any questions about the goods, please let me know. I will contact you actively. Give you a reasonable solution. I hope we can have a good deal. thank you very much. :?

A pairs 6SJ7 6J8 6AC7 717A TUBES US GE IN ORIGINAL BOX.

Ende: 18.06. 2023 05:51:18 am Sonntag
  • Zustand: Gebraucht
  • Preis: 27.45 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 155606014529
  • Anzahl Gebote: 0
  • Verkäufer: vtubes6 (1175|100.0%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: CHINA China
  • Versand nach: Worldwide
  • Versandkosten: 8,37 EUR
  • bei ebay
  • Beschreibung

    --------------Description -------------- A pairs 6SJ7 TUBES US GE IN ORIGINAL BOX. 6SJ7 can replace 6J8 6AC7 717A The same batch B4 I had test them in VT-7, the value is 75 78 (6SJ7 IN VT-7 THE Mini-mum value is 40) Please check my picture for more details # 2322 --------------Payment-------------- The terms of payment we accept: PAYPAL If you have any questions, please feel free to contact me --------------Shipping-------------- When I receive your payment. I will send your items within 1-3 days We provide professional packaging services to ensure that you receive your items safely. --------------About postage-------------- If you purchase multiple items from our store, we offer combined shipping to save you money. --------------About us-------------- Quality merchandise and customer service is our primary concern. Many of our customers come back to us again and again because of our integrity, fair prices, and excellent customer service, regardless of where they live in the world --------------Contact us-------------- Hello.If you have any questions about the goods, please let me know. I will contact you actively. Give you a reasonable solution. I hope we can have a good deal. thank you very much. :?

Matched Sleeve of 5 NOS NIB CBS 6AC7 Vacuum Tubes

Ende: 18.06. 2023 02:20:29 am Sonntag
  • Zustand: Neu: Sonstige
  • Preis: 32.04 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 175762563393
  • Anzahl Gebote: 0
  • Verkäufer: wsstef (2938|100.0%)
  • Verkäufertyp: Privat
  • Ort: Reno, Nevada USA
  • Versand nach: US
  • Versandkosten: 17,98 EUR
  • bei ebay
  • Beschreibung

    RARE Electrically and physically matched sleeve of 5 vintage NOS/NIB CBS Hytron 6AC7 vacuum tubes made in USA. Electrically tested using a calibrated Sencore MU150 Continental II Vacuum Tube tester. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

Sleeve of 5 NOS NIB Raytheon 6AC7 Vacuum Tubes

Ende: 18.06. 2023 02:20:09 am Sonntag
  • Zustand: Neu
  • Preis: 18.31 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 175762561935
  • Anzahl Gebote: 0
  • Verkäufer: wsstef (2938|100.0%)
  • Verkäufertyp: Privat
  • Ort: Reno, Nevada USA
  • Versand nach: US
  • Versandkosten: 17,71 EUR
  • bei ebay
  • Beschreibung

    Electrically and physically matched sleeve (5) of vintage NOS/NIB Ratheon 6AC7 vacuum tubes made in USA. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

Full Sleeve 5 NOS NIB GE 6134 6AC7 Vacuum Tubes Matched USA

Ende: 18.06. 2023 02:20:09 am Sonntag
  • Zustand: Neu
  • Preis: 35.7 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 175762561950
  • Anzahl Gebote: 0
  • Verkäufer: wsstef (2938|100.0%)
  • Verkäufertyp: Privat
  • Ort: Reno, Nevada USA
  • Versand nach: US
  • Versandkosten: 16,44 EUR
  • bei ebay
  • Beschreibung

    Electrically and physically matched Sleeve of 5 vintage NOS/NIB GE 6134/6AC7 vacuum tubes made inUSA. Electrically tested using a calibrated Sencore MU150 Continental II Vacuum Tube tester. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

Sleeve of 5 NOS NIB Raytheon 6AC7 Vacuum Tubes

Ende: 18.06. 2023 02:20:09 am Sonntag
  • Zustand: Neu
  • Preis: 22.88 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 175762561986
  • Anzahl Gebote: 0
  • Verkäufer: wsstef (2938|100.0%)
  • Verkäufertyp: Privat
  • Ort: Reno, Nevada USA
  • Versand nach: US
  • Versandkosten: 17,8 EUR
  • bei ebay
  • Beschreibung

    Electrically and physically matched sleeve (5) of vintage NOS/NIB Ratheon 6AC7vacuum tubes made in USA. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

Sleeve of 5 NOS NIB National 6AC7 Vacuum Tubes

Ende: 18.06. 2023 02:20:09 am Sonntag
  • Zustand: Neu
  • Preis: 17.39 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 175762562003
  • Anzahl Gebote: 0
  • Verkäufer: wsstef (2938|100.0%)
  • Verkäufertyp: Privat
  • Ort: Reno, Nevada USA
  • Versand nach: US
  • Versandkosten: 17,69 EUR
  • bei ebay
  • Beschreibung

    Electrically and physically matched sleeve (5) of vintage NOS/NIB National 6AC7 vacuum tubes made in USA. Electrically tested using a calibrated Sencore MU150 Continental II Vacuum Tube tester. These tubes test AS-NEW and have never been used. Due to the nature of vintage vacuum tube electronics, these tubes are being sold for parts AS-IS and will be properly packed for shipping. Please check my extensive feedback rating for confidence.

3097 HUGE LOT OF MISC BRANDS 6AC7 6AG7 6AH4 6AL11 1Q5 6AC10 1H5 VACUUM TUBES

Ende: 17.06. 2023 20:36:00 am Samstag
  • Zustand: Gebraucht
  • Preis: 22.31 EUR Auktion
  • Status: verkauft
  • Artikelnummer: 145124631804
  • Anzahl Gebote: 2
  • Verkäufer: audiotubesandmore (4579|99.5%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Wilmington, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 62,04 EUR
  • bei ebay
  • Beschreibung

    Welcome to Vacuum Tube Depot llc! We have been one of the leading online suppliers of vacuum tubes for many years. Recently, we acquired a very large collection of tubes that we are excited to offer. We have tested and sold thousands of these tubes, and have many, many more to sell. After testing literally thousands of tubes from this collection, we have found only a small handful that did not test well. The vast majority tested strong. Buy with confidence, and if you are not happy with your purchase, you can send it back on your dime for a refund. We will combine shipping on multiple purchases within 5 days of the first auction ending. Payment must be made within 5 days or your purchase will be canceled and re-listed. We do not have the space to hold onto auctions for you for any longer than this. If you would like combined shipping, please wait to make payment until after we have sent your invoice. We send invoices each day after all auctions have ended for that day. Combined shipping can only be combined with this shop, not other shops with similar names. Thank you for shopping with Vacuum Tube Depot llc! We have tons of these flats loaded with tubes. We opened maybe tons boxes to make sure tubes matched the boxes, out of all the boxes we opened. Most matched, but several had the correct number but different brand from box. Sold as is

3061 HUGE LOT OF MISC BRANDS 5V4 6AC7 2X2 VT-49 39 12A7 VT-36 2A6 VACUUM TUBES

Ende: 17.06. 2023 20:15:00 am Samstag
  • Zustand: Gebraucht
  • Preis: 17.38 EUR Auktion
  • Status: verkauft
  • Artikelnummer: 145124560002
  • Anzahl Gebote: 2
  • Verkäufer: audiotubesandmore (4579|99.5%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Wilmington, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 62,04 EUR
  • bei ebay
  • Beschreibung

    Welcome to Vacuum Tube Depot llc! We have been one of the leading online suppliers of vacuum tubes for many years. Recently, we acquired a very large collection of tubes that we are excited to offer. We have tested and sold thousands of these tubes, and have many, many more to sell. After testing literally thousands of tubes from this collection, we have found only a small handful that did not test well. The vast majority tested strong. Buy with confidence, and if you are not happy with your purchase, you can send it back on your dime for a refund. We will combine shipping on multiple purchases within 5 days of the first auction ending. Payment must be made within 5 days or your purchase will be canceled and re-listed. We do not have the space to hold onto auctions for you for any longer than this. If you would like combined shipping, please wait to make payment until after we have sent your invoice. We send invoices each day after all auctions have ended for that day. Combined shipping can only be combined with this shop, not other shops with similar names. Thank you for shopping with Vacuum Tube Depot llc! We have tons of these flats loaded with tubes. We opened maybe tons boxes to make sure tubes matched the boxes, out of all the boxes we opened. Most matched, but several had the correct number but different brand from box. Sold as is

3060 HUGE LOT OF MISC BRANDS 6BX7 6K6 6AC7 12V5 6098 1P40 6SA7 VACUUM TUBES

Ende: 17.06. 2023 20:14:00 am Samstag
  • Zustand: Gebraucht
  • Preis: 17.38 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 145124558689
  • Anzahl Gebote: 0
  • Verkäufer: audiotubesandmore (4579|99.5%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Wilmington, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 62,04 EUR
  • bei ebay
  • Beschreibung

    Welcome to Vacuum Tube Depot llc! We have been one of the leading online suppliers of vacuum tubes for many years. Recently, we acquired a very large collection of tubes that we are excited to offer. We have tested and sold thousands of these tubes, and have many, many more to sell. After testing literally thousands of tubes from this collection, we have found only a small handful that did not test well. The vast majority tested strong. Buy with confidence, and if you are not happy with your purchase, you can send it back on your dime for a refund. We will combine shipping on multiple purchases within 5 days of the first auction ending. Payment must be made within 5 days or your purchase will be canceled and re-listed. We do not have the space to hold onto auctions for you for any longer than this. If you would like combined shipping, please wait to make payment until after we have sent your invoice. We send invoices each day after all auctions have ended for that day. Combined shipping can only be combined with this shop, not other shops with similar names. Thank you for shopping with Vacuum Tube Depot llc! We have tons of these flats loaded with tubes. We opened maybe tons boxes to make sure tubes matched the boxes, out of all the boxes we opened. Most matched, but several had the correct number but different brand from box. Sold as is

4 Vintage Military Electronic Vacuum 6AC7 Tubes.

Ende: 16.06. 2023 19:20:45 am Freitag
  • Zustand: Gebraucht
  • Preis: 3.2 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 166154397994
  • Anzahl Gebote: 0
  • Verkäufer: katelin-1 (233|100.0%)
  • Verkäufertyp: Privat
  • Ort: Swanton, Maryland USA
  • Versand nach: Worldwide
  • Versandkosten: 18,2 EUR
  • bei ebay
  • Beschreibung

    4 Vintage Military Electronic Vacuum 6AC7 Tubes. Military Tube Normal 0 false false false EN-US X-NONE X-NONE

Small Lot of Assorted Vintage Vacuum Tubes + Boxes 6ES9 6AH9 6AC7 15KY8A 6AG9

Ende: 15.06. 2023 01:42:30 am Donnerstag
  • Zustand: Gebraucht
  • Preis: 9.16 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 334905948407
  • Anzahl Gebote: 0
  • Verkäufer: sellrbuy280 (1096|100.0%)
  • Verkäufertyp: Privat
  • Ort: Ronda, North Carolina USA
  • Versand nach: Worldwide
  • Versandkosten: 54,93 EUR
  • bei ebay
  • Beschreibung

    For sale is this small lot of untested vacuum tubes + their boxes. I have many more tubes if you are interested.

2 x Vintage RCA 6AC7 Pentode Valves. Test as excellent

Ende: 13.06. 2023 18:00:01 am Dienstag
  • Zustand: Gebraucht
  • Preis: 3.49 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 134596541184
  • Anzahl Gebote: 0
  • Verkäufer: gm4byf (3769|100.0%)
  • Verkäufertyp: Privat
  • Ort: Edinburgh Großbritannien
  • Versand nach: GB
  • Versandkosten: 3,5 EUR
  • bei ebay
  • Beschreibung

    Two RCA 6AC7 pentode valves. OctalBaseBasic AVO valve tester - test as excellentValve 1 100% Valve 2 90%Ratings given as percentage of maximum book value Combined postage savings always possible subject to weight and suitable packing feasibility. Must ask before any payment of any item please and wait for an invoice before paying.

US HYTRON 6SJ7GT 6J8 6AC7 717A match pair TUBES Square Getter Silver Top

Ende: 11.06. 2023 00:21:54 am Sonntag
  • Zustand: Gebraucht
  • Preis: 66.64 EUR Auktion
  • Status: nicht verkauft
  • Artikelnummer: 285318299812
  • Anzahl Gebote: 0
  • Verkäufer: hifi-vtube (56|100.0%)
  • Verkäufertyp: Privat
  • Ort: ?? China
  • Versand nach: Worldwide
  • Versandkosten: 8,39 EUR
  • bei ebay
  • Beschreibung

    - ------------- Description - ------------- US HYTRON 6SJ7GT match pair TUBES 6SJ7 can replace 6J8 6AC7 717A Square Getter Silver Top Iron Base This test value is from the TV-7 tester (6SJ7 MINI-mum value is 40) Please check my picture for more details Z6034 Suitable for speaker, amplifier,CD player etc. - ------------- Payment - ------------- The terms of payment we accept: PAYPAL If you have any questions, please feel free to contact me - ------------- Shipping - ------------- When I receive your payment. I will send your items within 1-3 days We provide professional packaging services to ensure that you receive your items safely. - ------------- About postage - ------------- If you purchase multiple items from our store, we offer combined shipping to save you money. - ------------- About us - ------------- Quality merchandise and customer service is our primary concern. Many of our customers come back to us again and again because of our integrity, fair prices, and excellent customer service, regardless of where they live in the world - ------------- Contact us - ------------- Hello.If you have any questions about the goods, please let me know. I will contact you actively. Give you a reasonable solution. I hope we can have a good deal. thank you very much. :?

NOS Ken-Rad JAN CKR 6AC7 Vacuum Tube Hickok Tested 100%+

Ende: 09.06. 2023 16:45:37 am Freitag
  • Zustand: Neu
  • Preis: 5.92 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 175749324085
  • Verkäufer: harli160 (3289|99.5%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Kingman, Arizona USA
  • Versand nach: Worldwide
  • Versandkosten: 24,33 EUR
  • bei ebay
  • Beschreibung

    Here we have a NOS Ken-Rad JAN CKR 6AC7 Vacuum Tube Hickok Tested 100%+ New Old Stock and Hickok tested Please see pictures Thank you for looking Photos shown in this listing are of the actual item for sale.NO STOCK PHOTOS USED unless otherwise stated. Please have a look at the pictures for the cosmetic condition. Please realize when buying antique, vintage or used equipment that they cannot be in an absolute mint or absolute perfect condition, they might need some service, now or later. I take lots of pictures so you can see cosmetics. Use the zoom function and have a good look. It is impossible to describe every scratch, scuff or mark. So take a good look. That is what they are there for. We check and describe the as much of the functionality as we can. If not Fully tested , then items are not tested to the full extent and may have something wrong that I have not discovered. If Fully tested then that is what they are. Fully working. In photographs we occasionally use props to display items in the best light possible. These props, like my white board, lighting ,My Beautiful Wife (she is occasionally caught in the photos), kitchen table, Train track, boxes, my left or right hand are not including unless otherwise stated in the listing. ( Sorry for you having to read this but you would be surprised how many people think the items come with my table or a part of my anatomy and/or my Wifes legs that I have accidentally caught on camera.) Take it from me.... My Wife is not for sale and no amount of money would replace her, though if you offer enough I may include my one of my hands as this would get me out of doing some work. :o) In the first few lines you will see what you are bidding on, i.e... “This auction is for a ?????????? If it does not say base, stand , table , in either the main body of the description or title ... then they are NOT included in the sale. All our items, including changeable parts like bulbs, Vacuum Tubes, circuit boards, internal parts etc. are security marked. If you return an item these security marks are checked before refunds are given. I am sorry for having even to do this , but there are those out there that think it is clever to swap and change parts and return us a faulty item. We have them hidden throughout our items, including internal parts. These are there so we can identify if items have been removed, changed or tampered with when they are returned. VACUUM TUBE TESTING I do not Sell Just Passable Vacuum Tubes. All tubes purchased have loads of life left in them. Low and weak tubes are unceremoniously thrown in the nearest trash can, unless they are collectors Items. When using the word “Matched” it means in test results rather than in cosmetic looks. Whilst I endeavor to put tubes together from the same year and look the same, this is not always the case. I may have the same tube but from differing years matched up in test results, which means they may cosmetically or internally look a little different... The numbers/letters in parentheses are Equivalents put in to help people to find the correct tube. If it does not say MATCHED then please do not consider them to be such. I use a TV7/U military spec Tester which is calibrated . I have 4 of these machines and all display a slightly differing value if I test the same tube, as two testers are never the same. So this shows what I get, and what you get may be slightly different. So all test results are a guide only.I also use a Hickok 752 /800/600 or Amplitrex AT1000 for testing All tubes have passed the Gas and short tests. Rectifiers and Diode tubes do not have Transconductance values. IF YOURE UNHAPPY WITH AN ITEM ...Contact us via messaging.I am human... I make mistakes once in a while. I Run this store on eBay. I am not a huge retail outlet. I try to resolve any issue to both our best interests. MAILING I Try to Mail out within 24 hours of your payment. Where I live the Post office is closed on a Saturday, so Purchases paid for on a Friday will go out on Monday as I work Fridays and do not get home until after the PO is closed. RETURNSI accept returns unless stated otherwise in the description. We insure everything, and we have to pay for this insurance. I also pack well. If you still receive an item that has been damaged please let us know so we can start an insurance claim. Take plenty of pictures and send them to us as this helps alot.I may ask you to return or keep the item whilst the insurance goes though. If I ask you to return it then I will refund you in full once it is returned.. If I ask you to keep the item , then you will be refunded once the insurance goes through.I think it is only fair to ask the carrier responsible for the damage to pay for it. Please be patient enough for this process. DISCLAIMER/WAIVER OF LIABILITY Regardless of the origin of the equipment, documentation provided or identification appearing upon the equipment, the equipment described and offered here is in no way certified for, recommended for, or offered for any specific use. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, indicates their acknowledgment of, and agreement to the terms of this disclaimer. International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. For more information regarding taxes, etc. for some countries please check you local countries Web site. Most have one. •These charges are normally collected by the delivering freight (shipping) company or when you pick the item up – do not confuse them for additional shipping charges.” •We do not mark merchandise values below value or mark items as ‘gifts’ , demos, etc. - US and International government regulations prohibit such behavior. PLEASE DO NOT ASK Please check with your countrys customs office to determine what these Additional costs will be prior to bidding or buying.

RCA CRC U.S. NAVY 6AC7 VACUUM TUBE DATE MATCH PAIR 1943 TESTED CALIBRATED BK747B

Ende: 09.06. 2023 14:40:11 am Freitag
  • Zustand: Neu
  • Preis: 9.1 EUR FESTPREIS
  • Status: nicht verkauft
  • Artikelnummer: 225577137320
  • Verkäufer: mercedesman6572 (16242|99.7%)
  • Verkäufertyp: Gewerblich (mit Basis Shop)
  • Ort: Tonopah, Arizona USA
  • Versand nach: Worldwide
  • Versandkosten: 18,3 EUR
  • bei ebay
  • Beschreibung

      TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES FOR SALE THESE ARE THE TUBE/TUBES FOR SALE:    MANUFACTURER:                              RCA  PRODUCTION CITY:                                    USA TUBE TYPE:   US NAVY 6AC7 DESIGNATION  MILITARY SPEC YEAR:     1943 MONTH:    MAY Date code match    YES SILK SCREEN CONDITION %:                    100% MICA:   2 PLATES:   ? GM%:   123%,122%  SINGLE/PAIR/QUAD/MULTI:   PAIR GETTER:                                                         ?  GETTER DATE CODE                                                  MAY 1943 Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD      55-65 = ?     65 -100 = Good     100-120+ = NOS        I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. ALL CUSTOMERS PLEASE READ ALL NOTES BEFORE BUYING FROM ME !!1.  RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer.If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button.Sound quality is tremendously SUBJECTIVE. For tubes returned for noise or sound quality of any kind you pay for the shipping we refund the purchase. We refund the price of the item NOT THE SHIPPING COST. If we sent the wrong tube we will of course pay for return shipping. For any tubes that are DOA we require that you send a us a picture of the shipping box to show us the damage. We test EVERY tube sent out and none should be DOA unless broken in shipping.2.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT.3.  UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!!4. TESTING: I test all tubes that I sell in one way or another, or I will state untested. I have a B&K 747 tube tester. This is a mutual conductance tester. It give a percentage value of gm for the tube under test and checks for shorts and grid emissions. I also use a Tektronix curve tracer for testing triodes. I give a number of evaluations for tubes. One evaluation is a screen shot of the tube with a high voltage applied to the plate. This helps the buyer see the linearity of the tube in question at the highest voltage the tube will see in a real circuit. The Curve tracer steps the triode through 10 gate/grid voltages starting with -10 volts and going to 0 volts. The lines show how the tube conducts throughout that range. At 0 volt the tube is at max conduction and is the top line on the display. It is easy at that point to take where that top line intersects the plate voltage, find the milliamp level and compare it to the datasheet. I give those numbers for you in the Item condition box. To further help the buyer I also include the Design values, for gm and ma readings in the table. This can then be compared to other tube sellers using inferior test methods such as Hickok,  Amplitrex, and other testers. The Tektronix curve tracer gives values within 3% of the actual value. The very best portable testers only can approach 10% accuracy.5.    Please note: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else.6. VERY IMPORTANT!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage.7. I dont check each and every tube for noise or tone. This is SUBJECTIVE and it is too time consuming. If you dont like the noise level or the tone we offer a hassle free refund policy.  International customers note:1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws.3 International buyers if you bought more than one item and want combined shipping it will ship in 2 days.4. And all the Angels sang because the heavenly music was playing and it was turned all the way up.    Listing and template services provided by inkFrog