Product name:Bluetooth digital amplifier module Product model:XY-P15W Working voltage:DC:8-24V Bluetooth version:5.0 Transmission distance:15 meters (visible and unobstructed) Number of G channels:Two-channel (stereo) Output power (@1kHz):16W*2 @12V 40 Output power (@1kHz):10W*2 @12V 80 Output power (@1kHz):15W*2 @16V 80 Output power (@1kHz):20W*2 @20V 8Ω Output power (@1kHz):30W*2 @24V 80 (Heat sink required) Compatible speakers (30W-150W):4 ohms (8-12V power supply) Compatible speakers (30W-150W):8 ohms (8-24V power supply) Compatible speakers (30W-150W):16 ohms (8-24V power supply) Color:As Shown Material:PCB Package Contents: 2 * Bluetooth digital amplifier 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.