Vintage custom-built/DIY solid-state audio power amplifier project.

Based on the internal components and two TDA1520B audio amplifier ICs, this appears to have been intended as a stereo or two-channel Hi-Fi power amplifier. The TDA1520B is rated at approximately 20 watts per channel under appropriate operating conditions.

The unit powers on and the indicator light illuminates. No audio performance testing was completed. Several internal wires are loose or disconnected, and the original purpose and wiring configuration are unknown. This should be considered an unfinished electronics project requiring inspection, rewiring and repair by a qualified technician.

Useful components include a large power transformer, aluminum heatsink, TDA1520B amplifier ICs, large filter capacitors, Cannon/XLR-style connectors, 1/4-inch jacks, controls, switches and metal chassis. None of the individual components have been independently tested.

Sold strictly as-is for parts, repair, experimentation or completion of the original project. Please examine all photographs carefully to understand its present condition and internal construction.

Condition: For parts or not working — powers on, but incomplete and not functionally tested. Loose/disconnected internal wiring is present.