Pioneer SA-420 Hi-Fi amplifier

Silver Pioneer SA-420 Hi-Fi amplifier, Circa. 1981, refurbished and fully tested. Working perfectly. Suits record player (phono) input and 3 other sources. 
2 pairs of speaker outputs (note that one clamp is missing a small bit of plastic but working properly.

Power output: 21 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 60kHz

Total harmonic distortion: 0.1%

Damping factor: 30

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 72dB (MM), 97dB (line)

Output: 150mV (line)

Dimensions: 420 x 94 x 267mm

Weight: 4.6kg

Year: 1981