[DETAIL]<br>Stepless tuning using rotary encoder used by high-end speakers<br>Smooth feel with one-key start and stop<br>Product parameters:<br>Product name: 20W+20W Bluetooth audio power amplifier board<br>Product model: XY-C15H<br>Power supply: DC9-24V/2A and above<br>Bluetooth Version: 5.0<br>Audio input: Bluetooth + AUX input<br>Transmission distance: 15 meters (unobstructed)<br>Volume adjustment: high-end encoder knob adjustment, smooth feel<br>Adapter speaker: 10W-100W /4 ohm-16 ohm<br>Output power: 20W*2<br>Protection mechanism: electrostatic protection, overheating protection, overcurrent protection, short circuit protection<br>Unique function: support Sinilink-APP control<br>Product size: 67 x 47mm<br>Colour: black<br>Material: PCB circuit board<br>Package Contents:<br>1 x amplifier board<br>Note:<br>1.For DIY---The outer casing is a material package, It needs to be assembled by itself, and the material package is given a screwdriver.<br>2.---Attention!The heat sink tape 3M glue needs to be pasted to the chip by itself. Please refer to the picture in the description. The hotter the more sticky the thermal conductivity is.The shell version needs to be assembled by yourself. Screwdriver is given with the shell version.<br>3.For use---The power switch on the board is standby switch. After the switch is off, the machine is in standby state with low power consumption. If the power is completely turned off or the DC plug on the machine can be unplugged for a long time.<br>Note:<br>When using a 4 ohm speaker, the power supply cannot exceed 12V;<br>Use 8 ohm speakers, the power supply can not exceed 24V<br>Only the above package content, other products are not included.<br>Note:<br>Light reflection 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.<br><br>[ATTRIBUTES]<br>- High-concerned chemical: None<br>- Package: Yes<br>- Channels: 2 (2.0)<br>- High-concerned chemical: None<br>- Package: Yes<br>- Channels: 2 (2.0)<br>- Model Number: XY C15H<br>- Maximum Power Per Channel: 20W<br>- Brand Name: MAOZUA<br>- Origin: Mainland China<br>- Certification: CE