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.