??Decoder Parameter:<br> Supports Formats: MP3 (8-320K Code Rate)£¬ WAV (8-48000Hz Sampling Frequency).<br> (Note: Not supports DTS surround 5-6 sound channel WAV format)<br> Cyclical Pattern: Four Modes£¬ starting up default ¡°Sequence Circulation¡±. First time£¬ press the remote control button of REP to achieve "Shuffle"£¬ short press the button second time to achieve "Song cycle"£¬ short press the button third time to achieve "Stop after ended playing the single song"£¬ and short press the button fourth time return to ¡°Sequence Circulation¡± mode.<br> Operating Mode: Support remote operation (global function)£¬ can also connect eternal keyboard plate to achieve manual control.<br> Compatible with Devices: USB flash disk£¬ mini SD (memory card) and the USB Card Reader with MicroSD Card / TF Card.<br> <br> Specifications:<br> Materials: PCB FR-4 Dual Platen<br> Working Voltage: DC10-22V / AC 10-16V<br> Working Current: 4A<br> Recommended Power Source: 19V 4.74A switching power supply of Notebook (Can also chose the 10-16V / 30W Single Route Output Transformer<br> Maximum Output Power: 25W * 2 (27V 4ohm); 20W * 2 (24V 4ohm)<br> Color: Blue<br> Main Item Size: 8.0 * 6.8 * 2.4cm / 3.14 * 2.67 * 0.94in<br> PCB Size: 68 * 64mm * 1.6mm (Thickness) / 2.67 * 2.52 * 0.06in<br> Package Item: 54g / 1.92oz<br> Package Size: 16.0 * 13.5 * 3.5cm / 6.29 * 5.31 * 1.37in<br> Package Weight: 79g / 2.78oz<br> <br> Package List:<br> 1 * Bass Audio Speaker HIFI Digital Amplifier Board<br> 1 * Connection Cable<br> 1 * Remote Controller<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>