Trio KA 501 (Kenwood) amplifier 
 
Specifications
Power output: 65 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.03%
Damping factor: 60
Input sensitivity: 2.5mV (MM), 150mV (line)
Signal to noise ratio: 86dB (MM), 105dB (line)
Output: 200mV (line), 30mV (DIN)
Dimensions: 440 x 153 x 407mm
Weight: 11.7kg
Year: 1979