Mullard British MadeMatched Quad Vintage CV6 VR135 Valves TubesBlack Plates, Pan GettersMilitary Arrow Markings on the GlassNew Old Stock, Fully Tested & Matched on AVO VCM 1631) Ia 15.7 - Gm 3.152) Ia 15.9 - Gm 3.43) Ia 15.3 - Gm 3.14) Ia 15.1 - Gm 3.2Supplied in White Boxes

For sale is a LEGENDARY Matched Quad NOS/NIB CBS-Hytron JHY-5814A/12au7/ECC82 tubes. Made in USA in late mid-1950s Super rare Engineering Sample box, all tubes from 1 to 4. Tests very strong at NEW level and perfectly balanced. Test Results (MaxiPreamp 2, min: 0.8):Tube 1: 1.7/1.8Tube 2: 1.8/1.8Tube 3: 1.7/1.8Tube 4: 1.8/1.8 ------------------------------------------------------------------------------- Welcome to Tube Maze Store Here you will find a wide selection of NOS and reissue tubes. Weve been in business since 2012 with great reviews on Ebay, so buy with assurance that you will get a great product and if you are not happy with your purchase we will take it back and refund you full amount - no fuss, no hassle! We test and match all tubes before shipping on many available testers - Amplitrex AT1000, Hickok 539c, MaxiPreamp, MaxiMatcher, MaxiBurn. All tubes are also tested for noise and microphonics.

4 x 12BH7A Sylvania Tubes Made in USA Grey The lettering is smudged/worn 4 Pictures per Quad Tested on Enhanced Triplett E3444 Laboratory tester prepared by Paul Hart of Rosewell Ga. See pictures for results Bogey(100%) = 3100/3100 micromhos @ 11.5/11.5 mA +/- 10% The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-10.5___Volts bias or Cathode resistance*What were your tubes tested at? I do combine S&H

4 x 12au7 Sylvania Tubes Made in USA Long Black Plates D getter 1950s production **Rare tubes** The lettering is smudged/missing Tested on enhanced Triplet E3444 Laboratory Tester by Paul Hart of Roswell Ga. Results =2320/2330 micromhos @ 10.9/10.1 mA2320/2340 micromhos @ 10.4/10.9 mA2200/2260 micromhos @ 9.0/9.9 mA2220/2230 micromhos @ 9.1/8.9 mA Bogey(100% or New) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance*What were your tubes tested at? ***I do combine Shipping***

4 x 12AU7A Sylvania Tubes Made in USA for Conn Long Grey plates O getter Lettering may be smudged/missing Matching codes 312-439 = 1964 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2500/2560 micromhos @ 11.5/11.8 mA 2500/2620 micromhos @ 11.8/12.5 mA2570/2590 micromhos @ 11.1/11.8 mA 2500/2480 micromhos @ 11.2/11.8 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

4 x 12AU7A Sylvania Tubes Made in USA for Conn Long Grey plates O getter Lettering may be smudged/missing Matching codes 312-452 = 1964 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2450/2580 micromhos @ 10.2/13.2 mA 2530/2530 micromhos @ 11.9/10.9 mA2430/2500 micromhos @ 10.2/12.7 mA 2500/2450 micromhos @ 10.8/11.6 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

4 x 12au7 Sylvania Tubes Made in USA Long Black Plates D getter 1954 codes **Rare tubes** The lettering is smudged/missing Tested on enhanced Triplet E3444 Laboratory Tester by Paul Hart of Roswell Ga. Results =2350/2420 micromhos @ 9.4/11.1 mA2250/2260 micromhos @ 9.2/9.0 mA2330/2300 micromhos @ 10.9/10.0 mA2350/2370 micromhos @ 10.1/10.6 mA Bogey(100% or New) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance*What were your tubes tested at? ***I do combine Shipping***

4 x 12AU7A Sylvania Tubes Made in USA for Conn Long Grey plates O getter Lettering may be smudged/missing Matching codes 312-452 = 1964 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2370/2400 micromhos @ 9.8/10.8 mA 2320/2300 micromhos @ 9.6/ 9.2 mA2340/2370 micromhos @ 9.8/9.4 mA 2370/2380 micromhos @ 9.7/9.9 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

4 x 12AU7A Sylvania Tubes Made in USA for Conn Long Grey plates O getter Lettering may be smudged/missing Matching codes 312-452 = 1964 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2600/2530 micromhos @ 11.7/11.0 mA 2690/2550 micromhos @ 13.4/11.0 mA2590/2460 micromhos @ 11.2/10.3 mA 2520/2560 micromhos @ 11.6/11.8 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

TRADELABZ promote sustainability   eBay Products eBay Products eBay Products

QUAD of Matched & Balanced 12BH7A Tubes by Sylvania.Notched & Ribbed Gray Oval Plates with Square Getters. These match at 91/91 each on my IT-17 tester. New tubes usually test 85/85. NOTE - Markings are weak or rubbed off. 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. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying. Shipping to Italy, Thailand, or Russia by Registered Mail only - Contact me for details.

TRADELABZ Condition: Used / Fully operationalWhats included: Jolida Stereo Tube Amplifier, Model JD 801BRC w/ Tung Sol KT120 Matched Quad ated Output Power:70 W per channel at 8 ohms, 25Hz to 60KHz with 6550 Tubes 60 W per channel at 8 ohms, 28Hz to 72KHz with EL 34 Tubes Maximum Power Output:95 W per channel at 8 ohms, 1KHz with 6550 Tubes 85 W per channel at 8 ohms, 1KHz with EL34 Tubes Frequency Response:(at 1 watt into 8 ohms) 6Hz to 48KHz + 1dB; 0dB at 1KHz Bandwidth:14Hz to 70KHz + 3dB; 0dB = 70 W 1KHz, 8 ohms Distortion THD + N:Less than 1% at 11V output, 49Hz to 20KHz, 8 ohms Circuit Type:Ultra Linear, Class AB1 Input Impedance:Less than 100Kohms Input Sensitivity:Max. 550mV at 1KHz for 70 watt output Output Impedance:4 ohms and 8 ohms Negative Feedback:Less than 5 dB Noise and Hum:80 dB below rated output Tube Complement:2 pairs (4) of 6550/KT88 or EL34/6CA7 power output tubes; 1 pcs. 12AX7A preamplifier; 2 pcs. 6SN7GT power drivers Power Requirements:110V-120 VAC 60Hz 250 watts-standby, 500 watts maximum (220 VAC -240 VAC 50Hz option) Dimensions:18.25 inches (46.5 cm) wide by 13.5 inches (34.5 cm) deep by 8.5 inches (22 cm) high Weight:53 pounds (24 Kg) net, approximately 57 pounds (26 Kg) packaged Fuse:For 110/120 VAC: 6.3 amp slo blo, for 220/240 VAC: 3.15 amp slo blow. Size: 5mm X 20mm Combined shipping: Once your order is placed, well go ahead and send over a revised invoice. Our return policy. Shipping Consolidation: Once your order is confirmed, well promptly send a revised bill reflecting the combined shipping costs. Return Guidelines: New Items: If an item sold as new is returned in a used state, we, under no conditions, can accept the return. Pre-owned Items: We maintain a strict 30-day return policy. Returns will only be entertained if the buyer can provide a valid reason as per the eBay 30-day money-back guarantee. In all other instances, a 15% restocking fee will be applicable. Items Sold For Parts: We cannot accept returns on items sold as-is for parts. Who we are: TRADELABZ, a leading authority in precision test equipment. We are more than a company - we are a collection of passionate individuals unified by a vision to revolutionize the way tangible assets are traded globally. Our sphere of influence stretches across an impressive array of sectors. From state-of-the-art physics laboratories and distinguished universities to pioneering neural research facilities and high-impact bionuclear research organizations, we provide unrivaled support and services to a broad spectrum of clients. Our reach may be expansive, but our commitment to each client remains personal and profound.Headquartered in the vibrant state of California, we currently serve a rapidly growing list of elite clientele based throughout the United States. But our ambition transcends boundaries. We are in the process of expanding our horizon and establishing our mark on a global scale.Welcome to the new era of precision. Welcome to TRADELABZ.

TRADELABZ Condition: Used / Fully operationalWhats included: Jolida Stereo Tube Amplifier, Model JD 801BRC w/ Tung Sol KT120 Matched Quad ated Output Power:70 W per channel at 8 ohms, 25Hz to 60KHz with 6550 Tubes 60 W per channel at 8 ohms, 28Hz to 72KHz with EL 34 Tubes Maximum Power Output:95 W per channel at 8 ohms, 1KHz with 6550 Tubes 85 W per channel at 8 ohms, 1KHz with EL34 Tubes Frequency Response:(at 1 watt into 8 ohms) 6Hz to 48KHz + 1dB; 0dB at 1KHz Bandwidth:14Hz to 70KHz + 3dB; 0dB = 70 W 1KHz, 8 ohms Distortion THD + N:Less than 1% at 11V output, 49Hz to 20KHz, 8 ohms Circuit Type:Ultra Linear, Class AB1 Input Impedance:Less than 100Kohms Input Sensitivity:Max. 550mV at 1KHz for 70 watt output Output Impedance:4 ohms and 8 ohms Negative Feedback:Less than 5 dB Noise and Hum:80 dB below rated output Tube Complement:2 pairs (4) of 6550/KT88 or EL34/6CA7 power output tubes; 1 pcs. 12AX7A preamplifier; 2 pcs. 6SN7GT power drivers Power Requirements:110V-120 VAC 60Hz 250 watts-standby, 500 watts maximum (220 VAC -240 VAC 50Hz option) Dimensions:18.25 inches (46.5 cm) wide by 13.5 inches (34.5 cm) deep by 8.5 inches (22 cm) high Weight:53 pounds (24 Kg) net, approximately 57 pounds (26 Kg) packaged Fuse:For 110/120 VAC: 6.3 amp slo blo, for 220/240 VAC: 3.15 amp slo blow. Size: 5mm X 20mm Combined shipping: Once your order is placed, well go ahead and send over a revised invoice. Our return policy. Shipping Consolidation: Once your order is confirmed, well promptly send a revised bill reflecting the combined shipping costs. Return Guidelines: New Items: If an item sold as new is returned in a used state, we, under no conditions, can accept the return. Pre-owned Items: We maintain a strict 30-day return policy. Returns will only be entertained if the buyer can provide a valid reason as per the eBay 30-day money-back guarantee. In all other instances, a 15% restocking fee will be applicable. Items Sold For Parts: We cannot accept returns on items sold as-is for parts. Who we are: TRADELABZ, a leading authority in precision test equipment. We are more than a company - we are a collection of passionate individuals unified by a vision to revolutionize the way tangible assets are traded globally. Our sphere of influence stretches across an impressive array of sectors. From state-of-the-art physics laboratories and distinguished universities to pioneering neural research facilities and high-impact bionuclear research organizations, we provide unrivaled support and services to a broad spectrum of clients. Our reach may be expansive, but our commitment to each client remains personal and profound.Headquartered in the vibrant state of California, we currently serve a rapidly growing list of elite clientele based throughout the United States. But our ambition transcends boundaries. We are in the process of expanding our horizon and establishing our mark on a global scale.Welcome to the new era of precision. Welcome to TRADELABZ.

2 x E88CC Amperex 6DJ8/ECC88 Tubes Made in Holland Dimpled Disk Getter Some lettering may be missing on some tubes The auction is for 4 tubes and there are 2 offers available Tested on Enhanced Triplet E3444 Laboratory Tester Results = #1 11,500/11,800 micromhos @ 11.1/12.1 mA12,000/11,800 micromhos @ 12.1/11.9 mA10,000/12,300 micromhos @ 10.4/13.4 mA10,800/12,000 micromhos @ 9.5/11.7 mA #2 10,900/10,700 micromhos @ 11.6/12.7 mA10,500/10,300 micromhos @ 12.5/11.8 mA11,300/11,500 micromhos @ 11.6/11.5 mA11,400/11,900 micromhos @ 10.1/11.1 mA Bogey(100%) = 12,250/12,250 micromhos @ 15.0/15.0 mA +/- 10% The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__90_Volts plate, __90_Volts screen, ___-1.3___Volts bias or Cathode resistance* What were your tubes tested at? I do combine Shipping

4 x 12AU7a Hytron Tubes Made in USA for Hammond Short Black plates O getter Lettering may smudged/missing Codes = 1960 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2400/2420 micromhos @ 12.3/11.9 mA 2420/2430 micromhos @ 14.4/13.1 mA2350/2440 micromhos @ 12.1/12.8 mA 2390/2400 micromhos @ 14.3/12.7 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

4 x 12BH7A RCA Tubes Made in USA Grey - O The lettering is smudged/worn 4 Pictures per Quad Tested on Enhanced Triplett E3444 Laboratory tester prepared by Paul Hart of Rosewell Ga. 2800/2700 micromhos @ 10.5/10.0 mA 2820/2620 micromhos @ 9.4/ 8.0 mA2500/2800 micromhos @ 8.4/ 9.7 mA2800/2500 micromhos @ 8.5/ 7.3 mA Bogey(100%) = 3100/3100 micromhos @ 11.5/11.5 mA +/- 10% The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures transconductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-10.5___Volts bias or Cathode resistance*What were your tubes tested at? I do combine S&H

4 x 12AU7a Hytron Tubes Made in USA for Hammond Short Black plates O getter Lettering may smudged/missing Codes = 1960 The auction is for 4 tubes Tested on Enhanced Tripplet E3444 Laboratry Tester prepared by Paul Hart Results = 2120/2270 micromhos @ 11.8/10.8 mA 2120/2020 micromhos @ 11.0/10.5 mA2100/2060 micromhos @ 10.5/10.1 mA 2080/1960 micromhos @ 9.6/ 9.8 mA Bogey(100% or new) = 2200/2200 micromhos @ 10.0/10.0 mA +/- 10% I do combine S&H READ THIS:The measurements in this listing were taken on a Triplett 3444 modified to test the tube as an amplifier in accordance with RMA/EIA specifications, utilized by all US and most foreign tube manufacturers. This tester applies test conditions for this tube as shown below (including the precise filament voltage) and then measures trans-conductance (gm) in accordance with the engineering definition of gm. Tubes may also be operated under the test conditions for extended periods to be sure that it is stable. A tube must be tested in this manner to compare its test results with the manufacturer’s original intent or with other tubes of the same type. Most tube testers do not apply the test conditions required or conduct a valid gm test. For more details on the test and our test equipment, please contact us.The test conditions for this listing are__250_Volts plate, __250_Volts screen, ___-8.5___Volts bias or Cathode resistance* Most other testers CANNOT test tubes using the proper specifications and make up their own test results What were your tubes tested at?

Item: Quad 6201 (12AT7) GE & (1 unknown) Audio Radio Vacuum TubesCondition: Reclaimed / ReboxedTesting: Hickok TV-7/U. Minimum acceptable 6201 tube is (50-50)Test Results: Tube 1 = 94-91 Tube 2 = 94-91 Tube 3 = 82-80 Tube 4 = 84-82Warranty: All tubes received from North Coast Tubes are guaranteed for 30 daysShipping; USA is First Class - Reduced Shipping - Free Return Shipping - Same day shippingInternational Shipping; EBAY Standard International Shipping - Buy responsible for return shipping.Visit our Store for more savings on Tubes

Item: Quad RCA (1 for Hallicracter)12AU7A Pre Amp Audio Double Triode Vacuum TubesCondition: Reclaimed / Reboxed Components: (2) Clear Tops, Grey Plates, Side D Getters - (1) Grey plate, Top D getter - (1) Black Plate, Top D Getter.Place of Origin: USATesting: TV-7/U. Minimum acceptable 12AU7A is 56/56Test Results: Tube 1 = 96/100 Tube 2 = 100/98 Tube 3 = 74/76 Tube 4 = 94/98Warranty: 30 Day money back guaranty.US Shipping: USPS First Class Shipping - Free Return Shipping International Shipping: eBay International First Class USPS....... Return Shipping paid by BuyerVisit our Store for more savings on Tubes

Item: Quad NOS RCA 12AV7 / (5965) Audio Vacuum Tubes Condition: NOS / NIB Testing: TV-7/U. Minimum acceptable 6KD6 tube is (21-21) Test Results: Tube 1 = 38-39 Tube 2 = 40-40 Tube 3 = 38-37 Tube 4 = 39-41 Warranty: 30 Day money back guaranty.US Shipping: USPS First Class Shipping, Same day shipping and Free Return Shipping International Shipping: eBay International First Class USPS....... Return Shipping paid by BuyerVisit our Store for more savings on Tubes

Matched Quad ECC81 Telefunken 50th. Diamond > Roe-V10-Test: 10/10--10,5/10--11,5/10--10,5/10,5 mA > strong NEW/NOS10/10= 100% Sie Bieten auf 4. Stück >> It offering on 4.st piecesee they on my ** me side ** for more info >ROE-TEST-Computer-Tube-Tester

One quad of JAN-CRC-1625/VT-136 tubes by RCA.Test Ratings: 4 x 90 on my Jackson 648s tester, minimum is 70, new tubes at about 100.SHIPPING: Shipping rates quoted are for USA and Canada only. Shipping rates to Europe and Asia are subject to slight variation. The buyer for those countries will be informed about the exact rate after the sale. Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.

Four RCA 5963 vacuum tubesTubes are identical in construction Tested with a calibrated TV-7D/U tube tester. Calibration by Daniel Nelson. Code: unreadable NOS/Used: used Construction: long gray plate ring getter Glass: clear chrome topBase:-Tested at: 82/84 72/71 77/78 78/72Minimum 50/50The minimum is equal to 65% of the life of the tubeTested for shorts and gas. 30-day free return. Your items will be packed very well and shipped promptly.We combine shipping on tubes.Always glad to answer any questions.Thanks for looking!