[High Quality] It adopts copper DC connector and fence type terminal. It can withstand current, no heat, no damage to the wire. Free DC head lead, compatible with the input power interface of this product, even if you dont have a DC head adapter or battery, it can be wired.[HIFI Stereo] High quality dual channel power amplifier board for HIFI music. With AUX and Bluetooth two audio input methods, 2-in-1. 5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther. With a filter inductor, the sound is round and clear.[High Performance] Class D amplifier IC from that has high parameters. Advanced oscillator / PLL circuit uses multiple switching frequency to reject AM interference. The modulation frequency can be up to 1.2MHZ, and the output distortion is less than 0.1%. This helps prevent noise.[Protection Mechanism] devices feature short-circuit and thermal protection as as overvoltage, undervoltage, and DC protection to prevent failure. In the event of an overload, the device reports the fault condition to the processor to protect itself from damage.[Application] The potentiometer adjusts the volume with a switch for easy control of the volume, making it perfect for DIY speakers. widely used in solicitation, home theater, square speakers, etc.due to performance and comprehensive cost performance.Number of channels: left and right dual channels (stereo)Model: xy-c50lAdaptive horn: 0W ~ 200W 4 ohm 8 ohm 16 ohmPower supply voltage: DC: 5 ~ 24 V (the higher the voltage, the greater the output power)Transmission distance: 15m (without shielding)Protection mechanism: power reverse connection protection, short circuit protection, self overheat protectionColour: blackMaterial:metal + PCBSize: 56x50x18MMPackage Contents:1 * Amplifier BoardOnly the above package content, other products are not included.Note: Light 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.