Specification:
Model: ZK-AS21P
Power Output: 300W + 300W for L/R channels + 600W for subwoofer at 50V
Working Voltage Range: 18-50VDC (Recommended DC supply: 36-48V, 12A)
Audio Input: Bluetooth 5.1, AUX, USB Disk, Sound Card
Supported Channels: 2.1 channel (Left, Right, Subwoofer)
Amplifier Chip: Dual Texas Instruments TPA3255 chips
Transmission: Bluetooth Range up to 15 meters

Features:
1. High-Power Output: 300W per channel for left and right speakers and 600W for the subwoofer ensures clear and powerful sound output.
2. Flexible Audio Inputs: Supports Bluetooth 5.1, AUX, USB disk, and sound card options to accommodate diverse audio sources.
3. Advanced Components: Equipped with six Nichicon purple robe HIFI electrolytic capacitors, designed for excellent sound quality and low distortion.
4. Efficient Cooling System: Includes a thickened heat sink and silent, long-life fan to prevent overheating and enable stable performance at high power.
5. Customizable Functionality: Features external potentiometer ports for gain adjustment and additional expansion interfaces to connect microphones or decoding boards.
6. Premium Build: High-quality shielded connectors and tin-sprayed board design enhance operational reliability and signal clarity.

Package Includes:
1 x ZK-AS21P Power Amplifier Board