The Sansui SC-2100 is an audio component designed as a stereo control amplifier, featuring a range of functionalities for audio enthusiasts. It provides multiple input options and allows for fine-tuning of audio output with bass, treble, and balance controls. The amplifier is noted for its solid build quality and classic aesthetic, with a front panel that includes various knobs and buttons for easy user interaction. The SC-2100 also has indicators for signal presence and output level, which enhance user feedback. In terms of technical specifications, it operates at a rated power output suitable for driving a wide range of speakers, with low total harmonic distortion and high signal-to-noise ratio, resulting in clear audio reproduction. The unit typically includes phono input for turntables, providing versatility for vinyl enthusiasts, alongside several line-level inputs for other audio sources.