title. Pioneer QX-8000 AM/FM Receiver. 1972. Very early Quadraphonic unit. Front/Rear amp. Essentially a double, bridged amp.

date of work. 2021

work. Cleaned. Replaced all capacitors (including filter capacitors) and problematic transistors. Pulled and new thermal grease on output transistors x 8. Balanced amplifier/Set Bias. Cleaned all controls. Replaced all lamps with low-power warm white LEDs. Rated at 25 watts per channel x 4.