The Technics SU-Z400 is an integrated stereo amplifier that features a robust build quality and a range of features designed for excellent audio performance. It typically has a power output of around 80 watts per channel into 8 ohms, making it suitable for a variety of speakers. The amplifier includes multiple inputs, such as phono, line, and tape, allowing users to connect various audio sources. It also has tone control options, including bass and treble adjustments, to help tailor the sound to individual preferences. Additionally, the SU-Z400 often comes equipped with a headphone output for personal listening. The unit is recognized for its clean and dynamic sound reproduction, making it a great choice for music enthusiasts seeking a reliable and efficient amplifier.