Marantz PM 500 - recapped , serviced 
 
Specifications
Power output: 50 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 60kHz
Total harmonic distortion: 0.03%
Damping factor: 110
Input sensitivity: 1.8mV (MM), 21mV (line)
Signal to noise ratio: 88dB (MM), 93dB (line)
Output: 415mV (line)
 
 
Dimensions: 416 x 146 x 330mm
Weight: 13kg