stereo w/sonic holography, inputs: 2 aux, tuner, 2 phono (1 for MM & MC), stereo/mono switch, speakers on/off, 2 tape/monitor loops, dubbing 1 to 2 & 2 to 1, loudness, tone on/off, 2khz & 8khz turnover switch, separate bass & treble for each channel, power switch is not operational. switch jumpered to lessen noise in pre amp.