Description:<br /> Excellent noise suppression in the case is not connected to the input audio, the ear close to the speaker can not hear any noise<br /> Two-channel stereo, 5V power supply can output 3W +3 W power, can directly drive 4 8 small speaker output power, full of energy, good sound quality.<br /> Unique without LC filter Class D digital power board, and can be used directly to the computer's USB powered.<br /> Dual-panel wiring, properly solve the crosstalk between the ground potential balance and channel wiring<br /> Ultra-miniature design, can easily be placed in the internal space for a variety of digital products, ultra high zoom efficiency.<br /> <br /> Specifications:<br /> Item name: Power module<br /> Operating voltage: 2.5V-5.5V<br /> Speaker With:4-8ohms recommended:4 ohms<br /> Speaker Power :2-8W<br /> <br /> Note: <br /> - There might be little error of size for manual measurement.<br /> - The colors deviation might differ due to different monitor settings, please kindly understand.