Singmix 45 1000W Powered Karaoke Mixer Amplifier W/Bluetooth/Usb/Echo. A and B parallel speaker outputs supports (4) 8 ohm speakers or (2) 8 ohm speakers or (2) 4 ohm speakers (Terminals are banana or bare wire). Built in Bluetooth with 35 Foot range. USB input will play music files from a thumb drive or hard drive (32gb max). SD card playback will play music files stored on a memory card (32gb max). Mic line input mixer: volume, balance, echo, and 3 band EQ. Music input mixer: volume, balance, and 3 band EQ. Full controls over echo effects: volume, 2 band echo EQ, repeat, and delay parameters. Selectable mono/stereo echo effect. Dual 7 band master EQ (left/right). Master mic volume control. Remote control for USB/SD playback and Bluetooth Full function. Built in quiet cooling fan. Perfect for karaoke, DJ, KJ, home, and commercial applications. Precision tuning with high quality professional potentiometers and knobs. 115V/230V switchable for worldwide use. Unit weight: 14 lbs (6.35). Unit dimensions: 13″ x 5″ x 1. Rockville SingMix 45 1000w Powered Karaoke Mixer Amplifier w/Bluetooth/USB/Echo. The SingMix 45 is a powered mixer that is suited for karaoke as well as PA applications. The built in stereo amplifier is extremely powerful and can easily support 2 speakers that are either 4 ohm or 8 ohm. You can even use this powered mixer for 4 speakers that are 8 ohm. What makes the SingMix 45 really unique is that it has 4 mic/line inputs that have individual EQ controls in addition to the master EQ. It also has a very advanced echo effect that includes echo volume, a 2 band echo EQ, as well as repeat and delay parameters. In addition to the 4 inputs you also can play back tracks through Bluetooth, USB, or SD. 4 Mic/line inputs – (2) ¼ Front and (2) XLR Rear. Front: USB/SD Inputs, built-in Bluetooth. (2) pair RCA Inputs (rear). (2) pairs RCA Outputs (1 master line out and one rec out). Speaker outputs supports 4 speaker or 2 speaker setups (banana or bare wire). Front 3.5 MM aux input. THD: less than 0.5%. Frequency response: (20Hz-20KHz): ±2dB. Signal to noise ratio: >78db. Tone characteristic (80Hz-15KHz) ±12dB. 18.05″D x 13″W x 5H. Product Dimensions: 13.0 “h x 18.05 “h x 5.0 h. Weight: 14.0 oz. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Your satisfaction is guaranteed! All of our items, unless otherwise stated, will only run on 120 volts. Please check to make sure your country complies with these specifications. We will work with you to resolve any problem you may have.