Amps

REVIVING A HI-FI CLASSIC: THE HARMAN/KARDON A-401 STEREOPHONIC CONTROL AMPLIFIER

Vintage stereo equipment just has a special sound and presence unlike anything that’s made today, and these pieces of hi-fi history are always worth preserving and restoring. I recently got to work on a classic from 1978: the Harman/Kardon A-401 stereophonic control amplifier. I found this one nearly dead. It powered on, but that was […]

Technics SU-7300

SpecificationsPower output: 41 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.08% Damping factor: 40 Input sensitivity: 2.5mV (MM), 150mV (line) Signal to noise ratio: 78dB (MM), 97dB (line) Output: 150mV (line) Speaker load impedance: 4Ω to 16Ω Dimensions: 441 x 146 x 334mm Weight: 9.1kg

Pioneer SA-606

DescriptionThe Pioneer SA-606 is a stereo integrated amplifier giving a continuous power output of 40 watts per channel. The unit has discrete power supply sections for the class A and class B sections, and a current-mirror loaded differential amplifier with constant current loaded Darlington connected all-stage direct-coupled OCL output. Other features include outputs for two […]

Technics SU-7700

Stereo Integrated Amplifier (1976-79)Power output: 50 watts per channel into 8Ω (stereo)Frequency response: 5Hz to 80kHzTotal harmonic distortion: 0.06%Damping factor: 60Input sensitivity: 2.5mV (MM), 150mV (line)Signal to noise ratio: 78dB (MM), 97dB (line)Output: 150mV (line)Speaker load impedance: 4Ω to 16ΩDimensions: 410 x 140 x 315mmWeight: 7.2kgYear: 1976

JVC (Japan Victor Company) JA-S22

Power output: 40 watts per channel into 8Ω (stereo) Frequency response: 5Hz to 100kHzTotal harmonic distortion: 0.01%Damping factor: 30Input sensitivity: 2.5mV (MM), 160mV (line)Signal to noise ratio: 80dB (MM), 100dB (line)Output: 160mV (line)Speaker load impedance: 4Ω to 16ΩDimensions: 149 x 420 x 334mmWeight: 8.4kgYear: 1978