Conrad Johnson ART 88 Tube Preamplifier

Lightly used Conrad Johnson ART 88 preamplifier now available for sale. Unit is in fantastic shape, and has been looked over with utmost care. Includes all the original packaging, manuals and remote. Selling companion ART 108a Mono amplifiers and TEA1 S3 Phono pre, willing to work out package price for right customer. Detailed description will be provided below. Please reach out with any further questions.

unfortunately, trades are not possible. Any sale concluded in California is subject to sales tax.

The ART88 is essentially a dual-monaural preamplifier, the two channels sharing only the power transformer and chassis. The circuitry is elegant in its simplicity. Each channel’s audio circuit features two high-transconductance twin triode vacuum tubes. Gain is provided by a composite triode of paralleled sections of one NOS Philips PCC88. This amplifier stage is coupled to the preamplifier outputs through a high-current buffer stage consisting of paralleled sections of a second PCC88 twin-triode. This buffer stage provides a sufficiently low output impedance to make the ART88 compatible with a wide range of interconnect cables and amplifiers. Each channel’s audio circuit is powered by its own dedicated DC power supply featuring discrete voltage regulators that isolate the audio circuits from each other and from the AC power line. Infrasonic noise is minimized by operating the tube filaments (heaters) on a DC voltage supplied by another regulated power supply.

Specifications

• Gain:
  25 db
• Maximum output:
  10 vrms
• Output impedance:
  190 ohms
• Distortion:
  less than .25% THD at 1.0 V
• Frequency response:
  2 Hz to more than 100Khz
• Hum and noise:
  <50uv
• phase:
  phase inverting
• Tube complement:
  4 x PCC88

Dimensions

16.00”D x 18.75”W x 5.44”H inches

Total Weight

33 lbs.