Power on/off switch with LED indicator; Microphone input jack; Microphone level control; Bass/midrange/treble/loudness/balance controls; Master volume control; High/low frequency filter; Stereo/mono switch; Muting switch; Input source selector; Tuner/CD/aux/phone input RCA jacks; Tape monitor switch; Rack-mount design; 110V-220V switchable; Dim: 2.38 in. H x 19 in. W x 8.5 in. D;