Ks-33Bt 2.0Ch Stereo Audio Amplifier Receiver With Active Subwoofer, Karaoke [2.0CH Multi-Function Amp]KS-33BT is a multi-function home stereo amplifier, practical and powerful, offer 60W rated power and peak power up tp 200W output. with treble,bass and echo key, Microphone volume adjustment and Master volume adjustment?FM radio function?with SD,USB, AUX and MIC input,it also support CD,DVD,TV and PC audio source input, 2.0 channel make it can be contact two passive speakers and a active subwoofer [With MIC Jack and Echo] This KS-33BT Bluetooth stereo audio amplifier is also a karaoke amplifier and not just a hi-fi amplifier. The amplifier, with 2 mic jacks and an echo function, is ideal for karaoke or announcements. You can sing with friends, and it is also possible to achieve the echo effect with our amp. You only need to connect the mic to our amp and adjust the echo knob to get the reverb effect that you want. [Bluetooth 5.0 FM Functions]This subwoofer amplifier with Bluetooth and FM antenna, Built-in Bluetooth 5.0 chip, Bluetooth wireless connection audio devices can save wiring hassle and ensures excellent sound fidelity. (Notice: Bluetooth connection between the device and the amplifier is 5 meters). FM radio functions automatically searches local radio stations,allows you to listen to your favorite radio station anytime you want [Connect to CD/DVD,Multiple Input]KS-33BT hifi amplifier receiver with SD,USB, AUX and MIC input, RCA wired connection inputs and Bluetooth wireless connection inputs, audio source input by phones, computers, TVs, tablets, laptops, CD/DVDs, U-Disk and etc., suitable for home theater systems, car speakers, widely used in home, parties, bridal, teaching, supermarkets, restaurants, bars, etc. [Easy Operation]Conveniently change audio settings from a distance with the included mini remote control. (NOTE: Remove plastic insulating sheet on remote upon receipt for it to work) Set the desired output of music with bass and treble control knobs. Enjoy a clear and detailed display with our amp that comes with a built-in digital LED display.