Rockville RPA6000USB 19" 1000 Watt 2 Chan DJ/Pro/Karaoke Amplifier/Mixer Amp w/USB RPA6000USB: Professional Mixing Power Amplifier with AM/FM Digital Tuner. 19" rack mountable (removable rack brackets) digital hybrid amplifier/receiver. 4 Ohms: 125w x 2 RMS and 500w x 2 Peak. 8 Ohms: 100w x 2 RMS and 400w x 2 Peak. Built-in Preamplifier. Multicolor LED display. Digital Quartz Synthesized AM / FM tuner w/50 presets & auto scan. Preset EQ (rock, pop, classical, jazz). Remote control for quick access to all functions. Vacuum Fluorescent Digital output display meters. Separate gain controls for pre-amp & subwoofer. Digital karaoke system. 2 front microphone inputs w/volume, tone and echo controls. Built-in mic mixer with echo control. USB input for music files from USB thumb drive. 3.5mm input for iPod / MP3 player. Turbo cooling twin fan system. 1/4" headphone jack. Inputs and Outputs: Inputs On Front of Unit. ipod/mp3 - 1/8 mini jack style. 1/4 headphone jack. 1/4" Mic 1 and Mic 2 Inputs. USB Input. Rear Inputs. RCA Input for DVD or CD. Rear Outputs. Preamp output for an external additional amplifier or powered speaker. Sub preamp output to connect a powered subwoofer or an amplifier. Rear Speaker Terminals. Banana plug / binding post outputs for 4 speakers (2 on Channel A and 2 on Channel B). Amplifier Rack Ears (detachable) Feet attached to bottom of receiver Remote Antenna Owners manual AC Power Plug Karaoke DJ&#039;s Home Theater RPA6000USB: Professional Mixing Power Amplifier with AM/FM Digital Tuner 19&#034; rack mountable (removable rack brackets) digital hybrid amplifier/receiver 4 Ohms: 125w x 2 RMS and 500w x 2 Peak 8 Ohms: 100w x 2 RMS and 400w x 2 Peak Built-in Preamplifier Multicolor LED display Digital Quartz Synthesized AM / FM tuner w/50 presets &amp; auto scan Preset EQ (rock, pop, classical, jazz) Remote control for quick access to all functions Vacuum Fluorescent Digital output display meters Separate gain controls for pre-amp &amp; subwoofer Digital karaoke system 2 front microphone inputs w/volume, tone and echo controls Built-in mic mixer with echo control USB input for music files from USB thumb drive 3.5mm input for iPod / MP3 player Spectrum analyzer equalizer display Turbo cooling twin fan system 1/4&#034; headphone jack Individual pre-amp output controls w/ control knobs ipod/mp3 - 1/8 mini jack style 1/4 headphone jack 1/4&#034; Mic 1 and Mic 2 Inputs USB Input RCA Input for DVD or CD Preamp output for an external additional amplifier or powered speaker Sub preamp output to connect a powered subwoofer or an amplifier Record output to connect a recording device Banana plug / binding post outputs for 4 speakers (2 on Channel A and 2 on Channel B) THD: less than 0.1% Input sensitivity: 400mv/33K ohm Frequency response: (20Hz-20KHz): 2dB Signal to noise ratio: 80db Tone characteristic (100Hz-10KHz) 12dB 110v/220v switchable Dimensions: 19&#034;w x 11.75&#034;d x 3.5&#034;h Shipping weight: 15 lbs