Pioneer AM/FM stereo receiver model SX-450. The SX-450 is the baby brother out of the 50 series Pioneers. Was from around the years 1978 - 1979. Rated at 15 watts per channel. Features high filter, FM muting off/on, loudness on/off, mono/stero, one tape in/output, one phono and aux/mic inputs, functions - AM - FM - phono - aux/mic, separate bass and treble controls, and a tuning meter. Neat receiver.