Toshiba SA-504 4-Channel Stereo Receiver for parts or project

This is a vintage Toshiba SA-504 4-channel stereo receiver. It's a silver-faced unit with multiple input modes and manual tone control knobs. This receiver is a solid choice for someone looking to build or restore a classic analog audio setup. Here are the technical specifications for the Toshiba SA-504 in English: Technical Specifications Type: Quadraphonic Receiver Production Years: 1972 – 1976 Power Output (RMS): 2-Channel Stereo Mode: 70W per channel (8Ω) 4-Channel Quad Mode: 35W per channel (8Ω) Frequency Response: 10Hz to 55kHz Total Harmonic Distortion (THD): 0.4% Damping Factor: 30 Input Sensitivity: 2.5mV (MM phono), 150mV (line) Signal to Noise Ratio (SNR): 70dB (MM phono), 90dB (line) Output: 150mV (line) Speaker Load Impedance: 4Ω to 16Ω Tuning Range: FM, MW (AM) Dimensions: 500 x 380 x 115 mm Weight: 13 kg This unit is in good cosmetic condition. Power on. One channel work, fm/am lights need to be replaced.