Power On/Off Switch w/LED Indicator Microphone Input Jack Microphone Level Control Bass/Midrange/Treble/Loudness/Balance Control Master Volume Control Low Frequency Filter Stereo/Mono Switch Tape PLAY and REC Output RCA Jacks Muting Switch Input Source Selector Tuner/CD/Aux/Phono Input RCA Jacks Tape Monitor Switch 110/220 Voltage Switchable Rack Mount Design Dimensions: 19''W x 2.375''H x 8.5''D Stereo Control Pre-Amplifiers