This is a great sounding all FET (Field Effect Transistor) preamp featuring switching for six-line level inputs including tape monitor. Circuit highlights include a low output impedance which acts as a buffer between the level controls and the amplifier interconnect cables, avoiding the high frequency filter effect inherent in a passive control. This preamp has a unique zero-response circuit which exploits the symmetrical performance of N and P channel field effect transistors to cancel distortion without resorting to negative response. A low impedance discrete DC regulator powers this circuit, for minimum ac impedance at all audio frequencies. FET's are used in Sonographe audio circuits because of their tube-like square law transfer functions, which exclude unmusical odd order distortions that typify bipolar transistor circuits. Unit is in excellent condition. Owners Manual is included. * SMALL SURFACE SCRATCH. Below are some specs. Gain: 21dB Output: 10 V RMS Phase: Phase inverting. Response: 5 Hz to 100KHz Signal to Noise Ratio (20Hz-20KHz): 94 dB Distortion: less than .1% THD Output impedance: less than 200 ohms Dimensions: 12.25D x 17.125W x 2.5H inches Weight: 10 lbs

Item History Pre-owned Details and Specs This information is to be used for reference only. Accessories or warranties mentioned in this section may not apply to this specific item. Please check the Whats Included section and photos of this listing to see everything that comes with this item. The audio circuit is elegant in its simplicity. An audio amplifier stage consisting of a single-ended triode amplifier provides the voltage gain. This amplifier stage is connected to the preamplifier outputs through a high-current MOSFET buffer, which achieves a very low output impedance, making the ET5 extremely flexible in the choice of interconnect cables and amplifiers. DC voltage is supplied to the circuit by our latest discrete voltage regulator that isolates the audio circuit from the power line by maintaining negligible impedance across the audio frequency band. Infra-sonic noise is minimized by operating the tube filaments (heaters) on a dc voltage supplied by a separate regulated power supply. The ET5 is also notable for convenience and ease of use. The unit features input selection and level adjustment by microprocessor-controlled relays, with controls available both at the front panel and via a full-function remote. All control functions of the ET5 operate through microprocessor-controlled relays. For the level control, the relays select combinations from a network of precision, low-noise metal foil resistors to effect loudness and balance changes in 100 steps of approximately .7dB per step. All switching and adjustment can be controlled by the units remote control. A Theater Mode, which passes the input signal through at unity gain, makes it simple to incorporate the ET5 into a high quality home theater system without compromising its two-channel performance. Like its bigger brother, the GAT, the ET5 is constructed from the highest quality, carefully selected parts for unrivaled sonic performance and reliability. Tubes have been carefully hand selected for minimum noise and microphonics. The same CJD Teflon capacitors that distinguish the GAT are used in the ET5 for output coupling and post-regulator power supply storage. All other capacitors in the audio circuits and related power supplies are polypropylene or polystyrene - there are no electrolytic capacitors in the audio related circuits. The resistors in these circuits (including the two dozen level control resistors) are special low inductance, high-precision laser-trimmed metal foil resistors. Switches are sealed relays with gold-plated silver contacts. Input and output connectors are premium quality custom machined parts. Specifications Gain: 25 db Maximum output: 20 vrms Output impedance: 100 ohms Distortion: less than .15% THD at 1.0 Vrms output Frequency response: at unity gain 2 Hz to more than 100Khz Hum and noise: 100 db below 2.5 v Tube complement: 1 x 6922 Dimensions 15.375D x 19W x 4.94H inches Total Weight 28 lbs. Funcitonal Condition Full Functionality - This item is in full working order with all features operational. Functional Condition Notes (if any): Few signs of cosmetic wear on the ET5. The remote does have some wear. Cosmetic Condition Above Average - The item shows a less than average amount of wear for its age. Cosmetic Condition Notes (if any): This preamp was serviced by Conrad Johnson in March of 2023. It is completely functional. The remote does have an issue in the battery compartment as shown but it is functional. Whats Included ET 5 preamp, Remote control, Power cable, Original box SKU E19023CON

Amplifier is in good condition, it has been with me and used in my system for over a year and has always performed well with a variety of preamplifiers and speakers. Please look at the photos, use the zoom tool and ask any questions you may have prior to purchasing. The packing and insured shipping of an amplifier of this size and weight is expensive and requires a good amount of time effort and materials, including shock indicating labels. Packaging will exceed the carriers requirements and is included in the price.In the unlikely event of damage, you would be responsible for filing the claim as all shippers require things the seller is unable to provide as they may ask to inspect the package and will want photos of the box prior to opening and once opened with packaging when received. You should always photograph packages before opening and during demonstrating the level of protection to help expedite the process. Damage is a rare event but does happen and packaging well is the only part of it we have any control of and will be done right. Package will have tamperproof Shock Watch Red II shock indicating labels affixed to 3 corners to record shock or impact past a specific level recommended for heavy electronics from any direction, these are large, easy to read, makes the package handlers notice and pay attention and the result is better treatment of the package as well as having proof of mishandling if needed

The Conrad-Johnson MF-200 is an audiophile MOSFET stereo amplifier with a tube-like sound. It delivers 200 watts per channel into 8 ohms, 373 WPC into 4 ohms, so it will drive just about any speakers. Recently tested, still working and sounds good. Specifications:Sensitivity: 2.2VPhase: phase correctFrequency response: 20hz to 20khz +0 -.25 db with no more than 1% THD Hum and noise: 98db below full powerInput impedance: 100K ohmsDimensions: 15.63D x 19W x 8.75H inchesWeight: 59 lbs. This unit has some modifications that are intended to help reduce electrical interference. There are no changes to the actual circuit, just things like rectifier diodes replaced, wires rearranged and shortened to reduce interaction between input, output and power, and ferrite beads added internally. The power cord is rerouted through the bottom instead of out the back, to keep it away from the signal wiring. There used to be a modification for a passive attenuator that sat on top with the signal cables routed through the top instead of to the jacks in the back, to keep the signal path as short as possible (that matters with a passive attenuator, not so much with a preamp). That modification is gone now, but there are a couple of small holes in the top where the wires used to run. Because of this, Im pricing this less than these units normally sell for.

Conrad Johnson Pv2 Kontrolle Verstärker Elektronenröhre Betrieb Confirmed FrüherDas Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns.ZahlungSeien Sie versichert, dass unser Shop eine Vielzahl von Zahlungsmethoden anbietet.Bitte zahlen Sie innerhalb von 5 Tagen nach Auktionsende.Über unsWir sind in Japan ansässig. Überprüfen Sie bei elektrischen Produkten den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. Es ist uns eine Freude, Sie glücklich zu machen, indem wir Ihnen unseren empfohlenen Artikel vorschlagen.Wenn Sie Fragen oder Wünsche zu Artikeln haben, wenden Sie sich bitte an uns.Internationale Käufer – Bitte beachten Sie:-Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers.- Bitte erkundigen Sie sich vor dem Bieten/Kauf beim Zollamt Ihres Landes, wie hoch diese zusätzlichen Kosten sein werden.-Diese Gebühren werden normalerweise von der liefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten.-Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbieten ein solches Verhalten.]]>Wir sind in Japan ansässig. Überprüfen Sie bei elektrischen Produkten den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. -Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers. -Diese Gebühren werden normalerweise von der liefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten. -Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbieten e Unit Quantity NA Unit Type NA MPN NA Country Japan Brand No Brand UPC NA Country/Region of Manufacture NA California Prop 65 Warning NA Model NA Type NA

CJ MF200 and and PF1 preampSuper clean pairfaceplates are perfect All tested and both working perfect!!!please google for many reviews and specswill ship in 2 separate insured boxesplease review our excellent feedback and purchase with confidence

Follow us| Sign up for our newsletter Conrad-Johnson MF200 - Audiophile Quality Solid State FET Stereo Power Amplifier For over 20 years High End Audio Auctions has been selling the finest HiFi online, but did you know that we BUY your HiFi equipment as well? Contact our sister company STEREOBUYERS for a fair quote today! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Conrad-Johnson MF200 Details & Testing Notes Cosmetic Condition:7/10: Good - some signs of wear, looks used but well-maintainedCosmetic Notes:blemish on top edge of faceplate and on top cover. Very good overall physical condition. Please see all high resolution photographs below.Functional Notes:Functions as intended and sounds great.Voltage:120V 60HzSerial #:7501603Original Box:NoManual:NoPower Cord:AttachedShipping Method:FedEx Ground (Domestic) / USPS Priority, Ebay Standard Delivery (International)Shipping Weight (lbs):74 (26x26x26) High-End Audio Auctions has been THE trusted source for high-end, classic and vintage audio components on eBay since 2000! Our unique products, unparalleled service and bombproof packaging keeps our customers coming back again and again. We are experts at selling and shipping worldwide, with items ranging from $5 to $50,000. We look forward to earning your repeat business! By placing a bid on any of our listings, you agree to our terms & conditions Click here to learn more Home| About Us| Store Policies| FAQs| Feedback| Contact Us| Custom Tuned Cables _gsrx_vers_1516 (GS 9.3 (1516))

Follow us| Sign up for our newsletter Conrad-Johnson MF200 - Audiophile Quality Solid State FET Stereo Power Amplifier For over 20 years High End Audio Auctions has been selling the finest HiFi online, but did you know that we BUY your HiFi equipment as well? Contact our sister company STEREOBUYERS for a fair quote today! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Conrad-Johnson MF200 Details & Testing Notes Cosmetic Condition:7/10: Good - some signs of wear, looks used but well-maintainedCosmetic Notes:blemish on top edge of faceplate and on top cover. Very good overall physical condition. Please see all high resolution photographs below.Functional Notes:Functions as intended and sounds great.Voltage:120V 60HzSerial #:7501603Original Box:NoManual:NoPower Cord:AttachedShipping Method:FedEx Ground (Domestic) / USPS Priority, Ebay Standard Delivery (International)Shipping Weight (lbs):74 (26x26x26) High-End Audio Auctions has been THE trusted source for high-end, classic and vintage audio components on eBay since 2000! Our unique products, unparalleled service and bombproof packaging keeps our customers coming back again and again. We are experts at selling and shipping worldwide, with items ranging from $5 to $50,000. We look forward to earning your repeat business! By placing a bid on any of our listings, you agree to our terms & conditions Click here to learn more Home| About Us| Store Policies| FAQs| Feedback| Contact Us| Custom Tuned Cables _gsrx_vers_1516 (GS 9.3 (1516))

Conrad Johnson Premier8 Audio Research 5SE,LS15,Thiel CS2.4 Marantz SA8005 Set. A VINTAGE CLASSIC CONDRAD JOHNSON DESIGN PREMIER 8 MONO TUBE AMPS 275 WATTS RMS PER AMP VERY GOOD CONDITION SHIPPING VIA TRUCK FREIGHT ONLY --------------------------------------------------------------------- This pair of CONRAD JOHNSON PREMIER 8 mono tube amps is in VERY GOOD condition! The sound is EXCELLENT! One of the amps operates per spec, the other plays with its bias lights lit. That 2nd amp can only be biased by removing the bottom cover and individually testing each tube with a meter – recommended for technicians only. Power Output ­ 275 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Power Output (model XS equipped with EL34 output tubes in triode mode) ­ 130 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Response: 20Hz to 20kHz, +/- .1 dBInput Impedance: 100 kOhmsHum & Noise: 96 dB below rated powerMechanical: 21 D x 19W X 9.5 H Weight: 90 lbs. Please see the photos as they are part of the description. This Premier 8 will include its original shipping cartons, but with hand-crafted packing and the original operation manual. The PREMIER 8 was made in1992 when they sold for $7000 a pair The CJ blue book value is $10k The Premier Eight used premium quality component parts throughout. The power supplies, including the main storage reservoir, used only polypropylene and “cjd” polystyrene capacitors as opposed to the traditional deployment of electrolytic capacitors. The audio circuit consists The buyer is responsible for all shipping charges. https://www.youtube.com/watch?v=_0-FUr4iZBc

Conrad Johnson Pv2 Kontrolle Verstärker Elektronenröhre Betrieb Confirmed FrüherDas Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns.ZahlungSeien Sie versichert, dass unser Shop eine Vielzahl von Zahlungsmethoden anbietet.Bitte zahlen Sie innerhalb von 5 Tagen nach Auktionsende.Über unsWir sind in Japan ansässig. Überprüfen Sie bei elektrischen Produkten den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. Es ist uns eine Freude, Sie glücklich zu machen, indem wir Ihnen unseren empfohlenen Artikel vorschlagen.Wenn Sie Fragen oder Wünsche zu Artikeln haben, wenden Sie sich bitte an uns.Internationale Käufer – Bitte beachten Sie:-Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers.- Bitte erkundigen Sie sich vor dem Bieten/Kauf beim Zollamt Ihres Landes, wie hoch diese zusätzlichen Kosten sein werden.-Diese Gebühren werden normalerweise von der ausliefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten.-Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbieten ein solches Verhalten.]]>Wir sind in Japan ansässig. Überprüfen Sie bei elektrischen Produkten den Hersteller und das Produkt und rechnen Sie die Spannung in das jeweilige Land um. Wir planen den Versand per FedEx oder DHL. Bitte kontaktieren Sie uns, da sich die Versandkosten in einigen Fällen ändern können. -Einfuhrzölle, Steuern und Gebühren sind nicht im Artikelpreis oder den Versandkosten enthalten. Diese Gebühren liegen in der Verantwortung des Käufers. -Diese Gebühren werden normalerweise von der ausliefernden Spedition (Versandfirma) oder bei der Abholung des Artikels erhoben – verwechseln Sie sie nicht mit zusätzlichen Versandkosten. -Wir kennzeichnen Warenwerte nicht unter dem Wert und kennzeichnen Artikel nicht als Geschenke. Die Vorschriften der US-amerikanischen und internationalen Regierung verbiete Unit Quantity NA Unit Type NA MPN NA Country Japan Brand No Brand UPC NA Country/Region of Manufacture NA California Prop 65 Warning NA Model NA Type NA

Conrad Johnson ET250S Power Amplifier Hybrid - Excellent - One Owner. Conrad Johnson ET250S - Excellent Shape - Power Amplifier Hybrid - One Owner. Original Box, Power Cord, and Manual included. Based in Indianapolis, IN. Tone Studio. Specifications Type: Hybrid stereo amplifier Power Output: 250 wpc from 20 Hz to 20 kHz (400 wpc @ 4 Ohm) Tube Complement: Two 6922 Sensitivity: 1.85V to rated power. Frequency Response (at 10 Watts): 20 Hz to 20 kHz (+/- .25dB) Hum and Noise: 104 dB below rated power Input Impedance: 100 kOhms Dimensions: 16.125 x 19 x 7.188 (DxWxH in inches) Weight: 65 lbs.

This item is pre-owned, in above average condition. Please view the condition details described below and shown in the photos. Details and Specs This information is to be used for reference only. Accessories or warranties mentioned may not apply to this specific item. Please check the Whats Included section and photos to see everything that comes with this item. The audio circuit is elegant in its simplicity. An audio amplifier stage consisting of a single-ended triode amplifier provides the voltage gain. This amplifier stage is connected to the preamplifier outputs through a high-current MOSFET buffer, which achieves a very low output impedance, making the ET5 extremely flexible in the choice of interconnect cables and amplifiers. DC voltage is supplied to the circuit by our latest discrete voltage regulator that isolates the audio circuit from the power line by maintaining negligible impedance across the audio frequency band. Infra-sonic noise is minimized by operating the tube filaments (heaters) on a dc voltage supplied by a separate regulated power supply. The ET5 is also notable for convenience and ease of use. The unit features input selection and level adjustment by microprocessor-controlled relays, with controls available both at the front panel and via a full-function remote. All control functions of the ET5 operate through microprocessor-controlled relays. For the level control, the relays select combinations from a network of precision, low-noise metal foil resistors to effect loudness and balance changes in 100 steps of approximately .7dB per step. All switching and adjustment can be controlled by the units remote control. A Theater Mode, which passes the input signal through at unity gain, makes it simple to incorporate the ET5 into a high quality home theater system without compromising its two-channel performance. Like its bigger brother, the GAT, the ET5 is constructed from the highest quality, carefully selected parts for unrivaled sonic performance and reliability. Tubes have been carefully hand selected for minimum noise and microphonics. The same CJD Teflon capacitors that distinguish the GAT are used in the ET5 for output coupling and post-regulator power supply storage. All other capacitors in the audio circuits and related power supplies are polypropylene or polystyrene - there are no electrolytic capacitors in the audio related circuits. The resistors in these circuits (including the two dozen level control resistors) are special low inductance, high-precision laser-trimmed metal foil resistors. Switches are sealed relays with gold-plated silver contacts. Input and output connectors are premium quality custom machined parts. Specifications Gain: 25 db Maximum output: 20 vrms Output impedance: 100 ohms Distortion: less than .15% THD at 1.0 Vrms output Frequency response: at unity gain 2 Hz to more than 100Khz Hum and noise: 100 db below 2.5 v Tube complement: 1 x 6922 Dimensions 15.375D x 19W x 4.94H inches Total Weight 28 lbs. Whats Included ET 5 preamp Remote control Power cable Original box Functional Condition - Excellent We checked this item out for functionality & found it to be in excellent condition. When you get the item, it will have all features and functions fully operational. This preamp was serviced by Conrad Johnson in March of 2023. It is completely functional. The remote does have an issue in the battery compartment as shown but it is functional. Cosmetic Condition - Above Average Cosmetically speaking, it looks to be in above average cosmetic shape for an item of this type with only the most minor of cosmetic wear as shown. To be more specific, here is what we noticed: Few signs of cosmetic wear on the ET5. The remote does have some wear.

CONRAD JOHNSON ET-250S Enhanced Triode Amplifier - 250w 2 channel Power Amplifier - with NEW Genalax Gold Lion Super Platinum Matched & Balanced 6922 E88CC Preamp Tubes. Included is a heavy gauge Monster-Cable power cord. No dents, bent cooling fins or nicks in the face plate. This will be packed in custom insulated 4 paneled - reinforced box, along with other high quality packing materials due to the 85lb weight. I ship heavy tube amplifiers, tube studio rack gear and guitar tube amplifiers worldwide all the time. I have been doing this for 25 years. PLEASE REMEMBER: Ebay adds and collects state sales tax on behalf of the state you reside in. This is the law and there is no way around. Too many people lately have been not paying for orders as they had not calculated and anticipated sales tax. This has been active nationwide since 2020!! These are your responsibility as a buyer. Please, do not place offers or purchase if you do not have funds to complete the transaction. Way too many non-paying buyers at the moment and its getting tiresome. Thank you

Conrad Johnson Premier8 Audio Research 5SE,LS15,Thiel CS2.4 Marantz SA8005 Set. A VINTAGE CLASSIC CONDRAD JOHNSON DESIGN PREMIER 8 MONO TUBE AMPS 275 WATTS RMS PER AMP VERY GOOD CONDITION SHIPPING VIA TRUCK FREIGHT ONLY --------------------------------------------------------------------- This pair of CONRAD JOHNSON PREMIER 8 mono tube amps is in VERY GOOD condition! The sound is EXCELLENT! One of the amps operates per spec, the other plays with its bias lights lit. That 2nd amp can only be biased by removing the bottom cover and individually testing each tube with a meter – recommended for technicians only. Power Output ­ 275 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Power Output (model XS equipped with EL34 output tubes in triode mode) ­ 130 watts from 30Hz to 15kHz at no more than 1% THD or IMD into 4 ohms (also available connected for 2, 8 or 16 ohm loads).Response: 20Hz to 20kHz, +/- .1 dBInput Impedance: 100 kOhmsHum & Noise: 96 dB below rated powerMechanical: 21 D x 19W X 9.5 H Weight: 90 lbs. Please see the photos as they are part of the description. This Premier 8 will include its original shipping cartons, but with hand-crafted packing and the original operation manual. The PREMIER 8 was made in1992 when they sold for $7000 a pair The CJ blue book value is $10k The Premier Eight used premium quality component parts throughout. The power supplies, including the main storage reservoir, used only polypropylene and “cjd” polystyrene capacitors as opposed to the traditional deployment of electrolytic capacitors. The audio circuit consists The buyer is responsible for all shipping charges. https://www.youtube.com/watch?v=_0-FUr4iZBc