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