IdolPro Professional Echo Mixing Amplifier IP-3900 with Equalizer for Karaoke. New item, open box. Product Dimensions: 16″ d x 17″ w x 7.5 h. IdolPro professional echo mixing amplifier. Echo controls: low, mid, high, repeat, delay, and volume. Music controls: low, mid, high, balance, and volume. Microphone controls: echo, balance, low, mid, high, and volume. (3) XLR front 2.25″ mic inputs and (2) XLR back 2.25″ back mic inputs. Built-in MP3 player module with USB jack allows you to record to USB flash drive – NOT INCLUDED. (2) HDMI inputs with ARC to connect to smart TVs. Built-in audio bluetooth receiver for streaming from smart devices. Outputs: DVD/VOD, RCA, sub woofer, pre-processing, HDMI. Banana plug and speakon plug speaker connectors. 1300W + 1300W maximum output at 8 ohms. Comes with remote control. Economy, standard, and expedited.