<p>Stable performance: with better noise performance, excellent output drive capability and relatively high small signal bandwidth, large power supply voltage range.</p> <p>Protection mechanism: overvoltage, undervoltage, overheating, DC detection, short circuit protection</p> <p>: When the audio input is enough and the power supply voltage\/current is enough, there be enough output power The higher the power supply voltage, the greater the output power, the smaller the speaker impedance, the greater the output power Please make sure that the power of the adapter power is the actual working power of the amplifier</p> <p>Wide range of uses: suitable for high quality and professional audio equipment, instruments, control circuits and telephone channel amplifiers.</p> <p>It has the characteristics of small size, high efficiency, high power and small heat.</p> <p>Model: -TB21</p> <p>Bluetooth Version: 5.0(no shielding, 10m)</p> <p>Input sensitivity: 500mV</p> <p>Audio Input AUX+Bluetooth</p> <p>Channel: 2.1</p> <p>Chip: TPA3116D2(with AM anti-interference function)</p> <p>Power: DC12-24V 5A</p> <p>Adapter speaker: 20-100W, 4-8ohm</p> <p>Output power: Max.50W(R and L channel), Max.100W(subwoofer)</p> <p>Protection Mechanism overvoltage , undervoltage, overhearing, DC detection, short circuit protection</p> <p>Material: PC+Metal</p> <p>colour: Black</p> <p>Package Contents: </p> <p>1 x Digital Amplifier Module</p> <p>1 x Screwdriver</p> <p>1 Adapter</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>