mini digital power amplifier in 2*3W class D amplifier board 2.5~5V USB input power

PRODUCT FEATURES

Excellent noise suppression, in case not connected with the input audio, with an ear trumpet can not hear any noise, two channel stereo, 5V power supply and can output 3W+3W power, can directly drive 4 ohm, 8 ohm speakers, large output power, enough energy, good sound quality. Class D digital power board without LC filtering is unique, USB can directly use the computer's power supply. Double panel wiring, and properly solve the crosstalk caused by ground potential wiring balance and inter channel, ultra micro design, can be easily placed in a variety of digital products inside the small space, high amplification efficiency. All adopt the whole plate welding machine, the welding quality can be better than non manual soldering!



Note: the left and right channel output end of the "negative" can not and together, otherwise it will burn IC, and electricity should be first connected speakers (load).

Rated working voltage of 2.5 ~ 5V, the limit voltage 5.5V.

mini digital power amplifier in 2*3W class D amplifier board 2.5~5V USB input power Images