Description: Subwoofer Digital Power Amplifier Board The PCB adopts 1.6mm thick double-sided sheet, 2.0 oz copper thickness, and the whole process of tin-spraying ensures the good passing performance of the current and the first-class PCB quality. With a fully enclosed dust-proof potentiometer, the performance is more stable and more durable than ordinary potentiometers. Small size, high power, no noise, the circuit design is very reasonable, without any low noise! Electrolytic capacitors use imported 2200UF/35V electrolysis to ensure a strong and continuous power support. The resistor uses 1206 0805 high-precision chip resistor to ensure a good signal-to-noise ratio of the whole machine. Specification: Working method: Class D Work efficiency: 90% Rated output power: 150W*1 Working voltage: DC18V to DC32V Power supply voltage: DC32V Maximum output current: 6A Quiescent current: 20mA Speaker impedance: 4-8 ohms Package Includes: 1 Piece Stereo Audio Amplifier Board Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you.