<p>Power amplifier chip: rt7498e</p> <p>Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection</p> <p>Widely used</p> <p>Long-life ultra-quiet fan (blocked rotor does not burn, no noise)</p> <p>Simple to use and easy to understand</p> <p>Product name: 2.1 channel Bluetooth audio amplifier module</p> <p>Product model: -HT21</p> <p>Bluetooth version: 5.0 (unobstructed, 15 meters)</p> <p>Amplifier chip: TDA7498E</p> <p>Input method: AUX + Bluetooth + USB (wheel button to switch modes and songs)</p> <p>Number of channels: 2.1 channels (left channel + right channel + subwoofer)</p> <p>Adaptive power supply: DC15-36V (undervoltage protection below 9V, also supports 12V power supply)</p> <p>Adaptive speakers: 30-200W, 4-8Q</p> <p>Output power: left and right channels less than equal 160W subwoofer less than equal 220W</p> <p>Product size: 145x126x28 (mm)</p> <p>The appearance and printing of the product from batch to batch, but it not affect the use.</p> <p>Screwdriver colors and styles are random and cannot be specified.</p> <p>Color:As shown</p> <p>Material:Metal</p> <p>Package Contents:</p> <p>1 * Amplifier Module</p> <p>1 * screwdriver</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>