Yamaha natural sound stereo receiver model MS-3 with Perpetuum Ebner turntable model PE 2036. The stereo system model is MS-3PE. From the 1970s. Features, one tape in/output, one aux input, pre in/main out, stereo/mono, loudness on/off, acoustic equalizer low and high settings, functions - aux - phono - FM muting - FM - AM, separate bass and treble controls, and a tuning meter. Very rare system. WPC and exact year unknown.