Conrad Johnson ART Amplifiers with Spare Tube Sets

Limited-edition pair of used conrad-johnson ART Amplifiers offered by Spearit Sound, an authorized conrad-johnson dealer. “The best (by far) that conrad-johnson has made.”--Johnathan Valin, THE ABSOLUTE SOUND. These ART Amplifiers come with a spare set of tubes and a 90-day store warranty. The ART Amplifier is designed for the use of industry professionals as well as dedicated audiophiles. These amplifiers are the pinnacle of all amps ever made by conrad-johnson. They are part of an edition of just 250 units (125 pairs). Original Retail price $39,900/PR
Conrad-johnson’s approach to circuit design is predicated on the principle that the surest path to both state-of-the-art musicality and exceptional reliability is simple circuits constructed of the finest available parts. These ART amplifiers exemplify this basic principle. The audio circuit has just three elements, each as simple as possible, and each essential to the operation of the amplifier. A voltage gain amplifier (a single triode) is direct-coupled to a cathode coupled phase inverter (each phase handled by a single triode), which in turn drives the output stage. For the ART mono-blocks, four pairs of KT120 output tubes, chosen for their musical accuracy, high power, and reliability, endow this amplifier with a muscular 275 watt output rating. To assure continued peak performance, the owner need only make a simple bias adjustment when new tubes are installed. Built in LED bias indicators allow the user to make this adjustment using only the supplied screwdriver.
Separate, low impedance, discrete dc power supply regulators are provided for the input and phase-inverter stages, thoroughly isolating these stages from the power demands of the output stage. These power supplies are designed to maintain a rock solid supply at all audio frequencies
Component parts contribute importantly to the sonic performance of any circuit design. The ART amplifiers maintain the exacting quality standards for which conrad-johnson is internationally known. Resistors are precision laser-trimmed metal foil types. Coupling capacitors are the new Teflon CJD caps, while the power supplies use large value polypropylene capacitors in parallel with CJD Teflons. There are no electrolytic capacitors in the audio circuits or in the related power supplies. Proprietary wide-bandwidth output transformers contribute to excellent high frequency performance. Even the machined gold plated OFC connectors and the internal wiring have been carefully selected for optimal sonic performance. Attention to every detail enable us to extract the full potential from our circuit designs and ensures that our products will perform to this potential for years to come. The ART Amplifiers is built without compromise to achieve a new standard in musical performance, and they are built to last.
Specifications:
Power:
ART Amplifier - 275 watts from 30 Hz to 15 KHz at no more than .5 % THD or IMD into 4 ohms (also available connected for 8 or 16 ohm loads)
Sensitivity: 1.8V to rated power Frequency Response (at 10 watts): 20 Hz to 20 kHz, +/- .25 dB
Frequency Response (at 10 watts): 20 Hz to 20 kHz, +/- .25 dB
Hum and Noise: 108 dB below rated power
Input Impedance: 100 kOhms
Tube Complement:
1 x M8080, 1 x 6N30P, 8 x KT120 each amplifier
Dimensions: 18.75D x 19W x 7.13H inches each amplifier
If you are a current conrad-johnson owner, please email seller for a trade-in quote. Weight: 83 Lbs. each amplifier.
Free domestic shipping (excluding HA & AK) via UPS Ground. Mass. residents add 6.25% sales tax. Made-in-USA. These limited edition conrad-johnson ART Amplifiers comes with a spare set of tubes and a 90-day, parts-and-labor Spearit Sound Warranty. Thank you for viewing our listing.

Spearit Sound

Order by phone M-F 10-7, Sat. 10-6, Sun. 12-5 EDT (877) 853-7425, (413) 584-9547.