Product parameters:
1. Ultra-micro volume: 23*24MM weight 0.45g 2. Excellent noise suppression, in the case of no input audio, you can’t hear any noise when the ear is close to the speaker 3. Two-channel stereo, 5V power supply can output 5W+5W power, can directly drive 4Ω, 8Ω small speakers, the output power is large, the energy is sufficient, the sound quality is good, with left and right channel volume adjustment. 4. The unique class D digital power amplifier board without LC filter can directly use the USB power supply of the computer. 5. Double-sided wiring to properly solve the ground potential balance and crosstalk between channels caused by wiring 6. The ultra-miniature design can be easily placed in the inner small space of various digital products, and the amplification efficiency is super high. 7. The whole board is welded by machine, and the welding quality is comparable to that of manual soldering iron welding! 8. The rated working voltage is 2.5-5V, and the limit working voltage is 5.5V.