<p>Product name: 100W+100W dual channel\/200W single channel pure rear stage amplifier board</p> <p>Power amplifier chip: TPA3221</p> <p>Product model: -2001</p> <p>Adapted power supply: The working voltage range is 10-30VDC, with a limit of 31V. It is recommended to use a DC</p> <p>power supply with a voltage of 24-30V and a current of 10A or more. The higher the voltage, the greater the output</p> <p>power. Never connect to AC power, otherwise it will burn out!</p> <p>Adapted speaker: 3-8 ohms, 20-100W in BTL dual channel mode; 2-8 ohms, 50-200W in PBTL mono mode</p> <p>Heat dissipation : Multi tooth heat sink</p> <p>Gain selection: 2nd DIP switch 2nd gear selection, 28dB, 38dB</p> <p>Bridging : Turn off the power first, turn the No.1 dial switch to the ON position, and the output end R+L+is</p> <p>short circuited in parallel for output, while R - L - is short circuited in parallel for output.</p> <p>Maximum power: In BTL mode,2*70W@24V 4 ,2*100W@30V 4 ;In PBTL mode, 150W@30V 3, 200W@30V</p> <p>2,110W@30V 4</p> <p>Protection mechanism: Input undervoltage, overheating, overcurrent, short circuit protection.Input anti reverse</p> <p>protection</p> <p>Product size: 100x65x18mm</p> <p>Colour:Black</p> <p>Material:plastic</p> <p>Package Contents:</p> <p>1 x amplifier board</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>