TPA3116D2 50W*2+100W 2.1 Channel Digital Subwoofer Power Amplifier Board DC12V-24V

features small size, high efficiency and high power. Features: Adopts two high quality TPA3116D2 digital amplifier chips. Sound quality is very good, high efficiency and amplifying power. 50W*2+100W 2.1 channels(left/right channel and subwoofer channel), high efficiency and low-heat. Powered by DC 12-24V, wide input voltage. User can adjust the volume by themselves easily. Applicable speaker impedance: 4-8 ohm. Just connect the power supply and loudspeaker box, enjoy the pure digital music! Notice: This amplifier board must be powered by DC power(DC12-24V), it's better to use high-performance switch power. Don't use transformer! Discounted at only: US$ 19.75