Rockville RPA60BT 19 1000 Watt 2-Channel USB and Bluetooth Karaoke Receiver/Amplifier/Mixer. 19 rack mountable (removable rack brackets) digital hybrid amplifier/receiver. THD: > 0.1%. Input Sensitivity: 400mv/33 KOhm. Frequency Response: 20 Hz – 20 kHz. Signal to Noise Ratio: 80 dB. Tone Characteristic: 100Hz-10KHz ±12dB. Front Inputs: 3.5MM front aux input, (2) 1/4 Mic Inputs, USB Input. Rear Inputs: RCA, Optical, Coaxial. 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). Rockville RPA60BT V2 1000 Watt 2-Ch USB Bluetooth DJ/Pro/Karaoke Amplifier Mixer. What’s in the Box. (1) AC Power Plug. The RPA60BT is loaded with 1,000 Watts of power! When manufacturing this item we upgraded the power of the amplifier. We tested these against similar items on the market and these significantly outperformed the others rated at 2000 and 3000 watts. This is more than an amplifier. The RPA60BT will be the control center for your home, karaoke, or professional audio system. There is an optical and coaxial input to easily integrate this with any television or LED panel. There is an RCA aux input for any media player like a CD player, etc. There is an RCA pre-amp output allowing you to expand your system by adding another amplifier or even powered speakers. The sub output allows you to add a powered subwoofer or another amplifier. The REC output allows you to record easily. You can also connect 2 microphones directly to the front of the receiver. Other playback options built into the unit are USB playback, Bluetooth, 3.5mm aux, and FM radio. There is a built in mic mixer with echo control, which makes this perfect for karaoke performances. Connect your favorite device, and quickly start a karaoke party with your favorite songs! The remote control that is included will allow you to access all functions of the receiver quickly and efficiently. Another major advantage this model has is that it has a built in radio. This makes it perfect for home use, and the radio is also great for intermissions during live performances. The adjustable equalizer will allow you to fine tune your music so it sounds at its best. Built In Dual Cooling Fan. The built in fans keep the amp cool. This amp will never overheat on you like the cheaper ones out there. We actually upgraded this to a dual cooling fan when we were engineering these. Since we upgraded the amplifier we actually felt the need to also upgrade the fan of this unit to ensure it doesn’t overheat. Beautiful Multi Colored Display. The multi colored display is easy to read. It has an active EQ curve that goes to the beat of the music. The display is very user friendly. Preamp output for an external additional amplifier or powered speaker. Record output to mixer. Record output to connect a recording device. Bass, treble, and balance control knobs. FM Radio Tuner with 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 master volume & subwoofer. 2 front microphone inputs with 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. Dimensions with rack ears (W x D x H): 19″ x 12.25″ x 3.5 inches. Dimensions without rack ears (W x D x H): 17″ x 12.25″ x 3.5 inches.