Audio Research Reference 75

Specifications
Power output: 75 watts per channel (stereo)

Frequency response: 1Hz to 75kHz

Total harmonic distortion: 0.6%

Damping factor: 8

Gain: 25 dB

Input sensitivity: 1.4V

Signal to noise ratio: 112dB

Speaker load impedance: 4Ω to 8Ω

Valve complement: 4 x KT120, 2 x 6H30

Dimensions: 483 x 222 x 495mm

Weight: 21.3kg