The Pioneer QM-800 A is a solid-state stereo amplifier that was produced in the late 1970s. It features a robust construction, designed with high-performance audio fidelity in mind. Capable of delivering a continuous power output of up to 150 watts per channel at 8 ohms, the QM-800 A provides a powerful listening experience suitable for various audio applications. It has a frequency response that ranges from 20 Hz to 20 kHz, ensuring that it can reproduce both low and high frequencies with clarity. The amplifier offers both A and B speaker outputs, allowing users to connect multiple speaker pairs or configurations. Included in its design are tone controls for treble and bass, enabling users to adjust the sound to their preference. The QM-800 A also features multiple input options, accommodating various sources like turntables, CD players, and other audio devices. Its aesthetic typically consists of a brushed aluminum front panel with easy-to-read knobs and indicators, contributing to its classic look.