Rockville SingMix 45 1000w Powered Karaoke Mixer Amplifier w/Bluetooth/USB/Echo. Style: 1000 Watt Brand: Rockville MPN: SINGMIX 45 UPC: 819216026373 EAN: 0819216026373. Number of Channels: 4. Product Dimensions: 18.05″D x 13″W x 5H. Item Weight: 14 Ounces. Item Weight: 14 ounces. Product Dimensions: 13 x 5 x 1 inches. Country of Origin: China. Item model number: SINGMIX 45. Date First Available: April 13, 2021. Power Source: Corded Electric. 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.