Acoustic Research AU // Integrated Amplifier

SOLD , now part of a Private Collection
This is a super rare and fantastic AR amplifier that has been almost completely recapped. It's such a sweet looking and sounding amp.
Production
1968-1971
Condition
9/10
Serial No.
AU18104
Restoration
  • Full service check
  • Cleaned controls, switches, and chassis
  • Repainted chassis cover
  • Almost all of the caps and resistors replaced
  • Detailed
Factory Specs

Power output 50 watts per channel into 8Ω (stereo)

Frequency response 20Hz to 20kHz

Total harmonic distortion 0.25%

Damping factor 40

Input sensitivity 2mV (MM), 200mV (line)

Signal to noise ratio 57dB (MM), 75dB (line)

Documentation

Acoustic Research AU Owner's Manual

The History of Acoustic Research
Acoustic Research, Inc. (AR) was founded in 1952 and incorporated on August 10, 1954, by audio pioneer, writer, inventor, researcher and audio-electronics teacher Edgar Villchur and his student, Henry Kloss. AR was established to produce the $185 model AR-1, a loudspeaker design incorporating the acoustic suspension...
[ Read More ]
Liner Notes
The amplifier circuitry used in the Acoustic Research amplifier receiver will provide any speaker system with an accurate and powerful signal.
Stock No.
6900802617512
This is a super rare and fantastic AR amplifier that has been almost completely recapped. It's such a sweet looking and sounding amp.

Production

1968-1971

Condition

9/10

Serial No.

AU18104

Restoration

  • Full service check
  • Cleaned controls, switches, and chassis
  • Repainted chassis cover
  • Almost all of the caps and resistors replaced
  • Detailed

Factory Specs

Power output 50 watts per channel into 8Ω (stereo)

Frequency response 20Hz to 20kHz

Total harmonic distortion 0.25%

Damping factor 40

Input sensitivity 2mV (MM), 200mV (line)

Signal to noise ratio 57dB (MM), 75dB (line)

Documentation

Acoustic Research AU Owner's Manual

The History of Acoustic Research

Acoustic Research, Inc. (AR) was founded in 1952 and incorporated on August 10, 1954, by audio pioneer, writer, inventor, researcher and audio-electronics teacher Edgar Villchur and his student, Henry Kloss. AR was established to produce the $185 model AR-1, a loudspeaker design incorporating the acoustic suspension...
[ Read More ]

Liner Notes

The amplifier circuitry used in the Acoustic Research amplifier receiver will provide any speaker system with an accurate and powerful signal.

Stock No.

6900802617512

Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier
Acoustic Research AU // Integrated Amplifier

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