Features - Rack mount amplifier receiver - 2.1 channel audio amp design - Bluetooth wireless audio streaming ability - USB flash & SD memory card readers - FM radio with digital LCD display - ID3 tag readout displays song title - aux (3.5mm) input jack - connect & stream audio from external devices - multi-source RCA (L/R) audio input connectors - (2) 1/4'' microphone inputs - spring-loaded speaker terminals - combo screw-type banana plug speaker jacks - RCA subwoofer output - front panel button control center - independent input source selectable - bass treble balance source volume adjustable - includes removable rack mount brackets Bluetooth connectivity - built-in wireless music streaming receiver - compatible with all of your favorite. Bluetooth devices - (iPhone Androids smartphones iPad tablets Etc ) - Bluetooth version 2.1 - wireless range 30'+ ft. What's in the box - amplifier receiver - remote control - detachable hardware rack mounts - FM antenna technical specs - max power output 200 watt at 4 Ohm - RMS power output 100 watt x 2 at 8 Ohm - rated input currency 75mA 8-ohm speaker loaded (30mA no load) - construction material metal aluminum alloy panel - frequency response 20-20khz +/-2dB - S/N ratio > 85dB - T H D <10% - input Sensitivity 200mv (max output 6000mv) - maximum USB flash & SD memory card support size 32Gb - digital media file support MP3 WAV - battery operated remote control requires 3V Lithium coin cell - power cable length 4 5' ft - power 110/240V switchable - dimensions (L x w x H) 19.0'' x 9.8'' x 2.2''-inches.