The Toshiba SA-620 is a stereo integrated amplifier featuring a robust design aimed at delivering quality sound reproduction. It typically includes a range of inputs for various audio sources, such as phono, line, and tape connections. The SA-620 is characterized by its power output, which is usually around 50 watts per channel, making it suitable for driving most standard speakers efficiently. Users can expect features like tone control for adjusting bass and treble, as well as a loudness switch that enhances low-level listening. The amplifier often has a high signal-to-noise ratio, which helps in reducing background hiss and ensuring a cleaner audio output. Build quality is generally solid, with a focus on user-friendly controls and layout. The definitive design elements often include a classic metal chassis with a brushed finish and well-labeled knobs and switches. Additionally, the SA-620 may have a headphone output and speaker selector switches for dual speaker setups, allowing flexibility in connecting various audio systems.