Feature:1. SPECIFICATIONS: Digital power amplifier board features bridge type single circuit 600W, dual circuit 300W and 300W, with front end amplification, adjustable from 26 to 36dB.2. EASY TO USE: Temperature control, manual control of the fan, the power amplifier module has a fast heat dissipation. And operates with a long service life.3. EXCELLENT PERFORMANCE: Adopting oxygen free copper wire to improve sound quality; The magnetic shielding mechanism has extremely strong anti electromagnetic interference EMI performance.4. PROTECTION MECHANISM: Built in input undervoltage, overheating, overcurrent, and short circuit protection, this power amplifier ensuring long term safe and stable operation.5. BRIDGING METHOD: Turn off the power supply first, turn the No.1 dial switch to the ON position, and output the R and L and parallel short circuit output, while R L parallel short circuit output.Specification:Item Type: Digital Power Amplifier Board Mode: ZK 3002Material: PCB Power Amplifier Chip: TPA3255Adapted Power Supply: Working voltage range 18-50VDC, limit 53V. It is recommended to use a DC power supply with a voltage of 36-48V and a current of 10A or more. The higher the voltage, the greater the output power.Adapted Speaker:3-8 ohms, 50-300W in BTL dual channel mode;2-8 ohms, 100-600W in PBTL mono modeHeat Dissipation Method: Temperature controlled automatic air cooling, or manually selected fan for continuous operation.Gain Selection: Potentiometer 10 speed adjustment, 26dB to 36dBBridging Method: Turn off the power supply first, turn the No.1 dial switch to the ON position, and output the R and L and parallel short circuit output, while R L parallel short circuit output.Maximum Power:In BTL mode, 2 x 300W at 50V 4 , 160W at 50V 8 In PBTL mode, 600W at 50V 2 , 300W at 50V 4 , 160W at 50V 8 Protection Mechanism: Input undervoltage, overheating, overcurrent, short circuit protection. No input anti reverse protection, positive and negative poles cannot be reversed!.Package List:1 xDigital Power Amplifier Board