1 Multi-channel input selection: Bluetooth / USB (U disk) / TF card / AUX (line input) comes With 2x25W amplifier 2. Decoder board comes with power amplifier, This product is simple wiring, no noise 3. Audio: Supports multiple audio formats including APE/WAV lossless format 4. High-power stereo output: 25W+25W, Amplifier chip is ST's TDA7492P 5. Single-supply DC wide voltage supply: DC12v-24v ,Current recommendation 2a above 6. Materials stress, Precision smt chip, ELNA fever coupling capacitors, gold-plated 3.5 audio input 7. The use of high-grade silicone remote control, feel better, more sensitive keys, non-ordinary bulge button remote control can compare Wiring instructions: 1, 2P white carrier: VCC +12V DC positive, GND power negative; 2. 2P white carrier: ROUT+ is connected to the right speaker's positive, ROUT- is connected to the right speaker's negative; LOUT+ is connected to the left speaker's positive, LOUT- is connected to the left speaker's negative. Panel function description: 1, "PREV / VOL-": long press the volume minus; short press for the previous track; 2, "PLAY / PAUSE": short press play / pause; 3, "MODE": click on a play mode, not inserted U disk or card will automatically skip U disk or card. Material:ABS colour:As Shown Package Contents: 1 x MP3 Decoder Board 1 x remote control Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.