Features: Audio adjustment: Independent adjustment of high and low tones Volume adjustment: High quality encoder knob 360 tuning Support Bluetooth-compatible 5.0;AUX input and U Disk display. TDA7498E stereo sound 160W+160W dual channel amplifier board Protection-mechanism: over pressure, under pressure, clipping, short circuit, overheating and other protections Specifications: Product model: XY-C160H Product Name: Stereo Bluetooth-compatible Audio amplifier board Bluetooth-compatible version: 5.0 Power supply: DC12-38V/5A or above Audio output: Stereo /2.0 Audio input: Bluetooth-compatible +AUX+U disk +USB sound card Frequency range: 20Hz--20KHz Volume Adjustment: high-quality encoder knob 360 tuning Output power:160w x2 49/36 VDC @ 80w x 2 @ 8 / 36 VDC 70w x 2 @ 4 35w x 2/24 VDC @ 8 / 24 VDC Product size: approx 11x8.2x2.5cm/4.33x3.23x0.98in Product weight: 220g Note: Due to the light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 1PC x Audio amplifier board