2.1 channel Bluetooth digital amplifier board, 50Wx2+100W subwoofer. Pure HIFI audio quality, pure and transparent treble, gentle and delicate midrange, surging and shocking bass adjustment of treble and bass for left and right channels, adjustment of heavy bass, 360-degree stepless tuning. Classic appearance multi-function main knob, the main knob uses a rotary encoder used in high-end amplifiers. Achieve 360-degree stepless tuning with smooth feel and one-button start and stop. Long to switch on and off is simple and convenient. 2.1 channel Bluetooth audio amplifier board, 50Wx2+100W subwoofer. The U disk file system must be FAT32, and the maximum support is 32GB. Product model: XY-S100L Product name: 2.1 channel Bluetooth audio amplifier board 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 channels + subwoofer + 3.5mm interface stereo output Volume adjustment: high-end encoder knob adjustment, smooth feel Frequency range: 20Hz-30KHz Signal-to-noise ratio: 92d B Output power: 50W x 2 (left and right channels) + 100W (subwoofer) Satellite box (left and right channels) compatible speakers: 10W-100W/4-8 Subwoofer (heavy bass) compatible speakers: 20W-200W/4-8 Protection mechanism: electrostatic protection, overcurrent protection, short circuit protection, overheating protection Special function: support Sinilink-APP control Product size: 95mm x 88mm x 25mm Product weight: 156g (The capacitor colors in the product are random, no specified colors are accepted) Color: As Shown Material: PCB Package Contents: 1 set * XY-S100L Bluetooth audio amplifier board module Only the above package content, other products are not included. Note: 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.