Check the listing for details. TPro 1600W 4 Channel Bluetooth Receiver with RCA, USB, SD Card, AUX & Mic Inputs. Color: Black, Condition: New. Listed at 219.99 USD. Technical Pro Techincal Pro 1600 Watts, 4 Channel, 8 Speaker Bluetooth Receiver with RCA, USB, SD Card, AUX and 2 Mic Inputs, Playback Controls, Fluorescent Display, for Home Speakers, Theater System, Karaoke 120 watts RMS Both Channels Driven @ 1.0% THD @ 8 ohms Power 8 Speakers at the same time! Each of the 4 Channels has a dedicated Volume control that can be adjusted to control 2 speakers 1600 Watts peak power Inputs: RCA, USB, SD Card, AUX Outputs: Banana blinding post 4 CH, 2 Speakers per channel (8 speakers total) ,RCA (Record Line Out), Bass and treble controls Headhone Jack Headphone Switch with dedicated Headphone volume Dual 1/4'' mic inputs with volume, echo & delay controls Mic Priority Switch USB & SD Card maximum size: 128GB Plays .mp3 files from USB drives and SD Cards Record from the AUX / RCA inputs onto the USB or SD Card inputs Recordings onto the USB flash drive, SD Card will be .mp3 file format Repeat / Random playback on USB / SD Card inputs Display screen will show track number and elapsed time on the USB/SD Card Dimensions (L x W x H):13"x 7.3"x 3.5"