Subwoofer Amplifier Board, 2.1 Channel ZK TB21 Power Amplifier Board for DIY Speaker Making - Hztyyier, Hztyyierrz54e7iubt2641

• Output Power: 2.1 CH stereo output power is 50Watt x 2 and 100Watt, working voltage range is DC12 to 24V, suitable for 4 to 8Ω, 50Watt to 300Watt passive speakers. Simple Layout: This 2.1 channel amplifier board with simple layout popping and audible noise will not occur even under high power output. This stereo amplifier board supports reverse polarity protection, over and under voltage protection, overheat protection, short circuit protection. This subwoofer amplifier board feature with BT 3.5mm AUX/3 PIN input, This amplifier board is compatible with almost all home audio devices, such as mobile phones, tablets, computers, CD players, etc. Easy Control: This ZK TB21 power amplifier board has subwoofer volume control, L and R channel treble and bass can be independently controlled. Inbuilt subwoofer low pass filter, with crossover control. How to Use: Once all speaker wires and power are connected to the Amp, there should be an indicator light on indicating that the Amp is on, then open the BT settings in your phone and look for it, when all are plugged in and powered, pressing the master volume button will set up the BT connection.