Fisher FM tube stereo receiver model 500-B. From the early 1960s. Rated at 65 watts per channel. The 500-B lacks AM. Features, high and low filters on/off, one tape in/output, MPX filter on/off, one phono, one aux inputs, mono/stereo selector, channel reverse on/off, loudness contour on/off. Selector for - tape head - MPX stereo - FM - aux - tape, separate bass and treble controls, Also has a tuning eye. Neat stereo receiver.