Features 1、Clear Quality Audio Experience: Offering Bluetooth, AUX, USB drive, and USB sound card support, the stereo audio receiver board allows you to enjoy a range of music sources for a superior audio experience. 2、Impressive Sound Effects: With a 2.1 channel and 100W subwoofer output, this receiver board delivers stunning sound effects to fulfill your pursuit of clear quality music experience. 3、Flexible Speaker Compatibility: Accommodating 10W‑100W 4Ω‑8Ω satellite boxes and 20W‑200W 4Ω‑8Ω subwoofer speakers, it provides a wider range of use choices, catering to different user needs. 4、Easy Control: Via a high end encoder knob for smooth volume adjustment and support for Sinilink‑APP control, controlling your audio has never been easier. 5、Multiple Protection: Equipped with static electricity, overcurrent, short circuit and overheating protection functions, the audio receiver board ensures safety and stability in every use. Specifications Item Type: Audio Receiver Material: Circuit Board Model: XY-S100L Power Supply: DC5-26V 10A Or Above Audio Channel: 2.1 Channel Bluetooth Version: 5.0 Audio Input: Bluetooth + AUX + U Disk + USB Sound Card Audio Output: Left And Right Channel + Subwoofer + 3.5mm Interface Stereo Output Volume Adjustment: High End Encoder Knob Adjustment, Smooth Feel Frequency Range: 20Hz-30KHz Signal To Noise Ratio: 92dB Satellite Box (Left And Right Channel) Adapted To The Speaker: 10W-100W, 4Ω-8Ω Subwoofer Adapted to The Speaker: 20W-200W, 4Ω-8Ω Protection Mechanism: Electrostatic protection, over current protection, short circuit protection, overheating protection Special Function: Support for Sinilink APP control Package List 1 x Panel 1 x Base Board 6 x Cap 1 x Accessory 1 x Screwdriver 1 x QR Code Manual 1 x Main Board 4 x Gold Screw 4 x Gold Nut 10 x Black Screw