Vintage Hitachi SR-5010 Class G Stereo Receiver/Amplifier August 12, 2019 by mercury Specifications Tuning range: FM, MW Power output: 25 watts per channel into 8Ω (stereo) Frequency response: 15Hz to 30kHz Total harmonic distortion: 0.04% Damping factor: 30 Input sensitivity: 3mV …