Free shipping PAM8403 module Super board 2 * 3W Class D digital amplifier board efficient 2.5 to 5V USB power supply<br>Quantity:1pcs<br>Weight:3 g<br>Color: as picture show<br>Size:20mmx20mmx1.5mm/0.79"x0.79"x0.06"(inch) (approx)<br>Features:<br>1.Advanced Micro Devices  volume: 1.85 * 2.11cm<br>2.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>3.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>4.Unique without LC filter Class D digital power board  and can be used directly to the computer's USB powered.<br>5.Dual-panel wiring  properly solve the crosstalk between the ground potential balance and channel wiring.<br>6.Ultra-miniature design  can easily be placed in the internal space for a variety of digital products  ultra high zoom efficiency.<br>7.All using the machine for the entire board soldering  hand soldering iron welding quality comparable!<br>8.Rated working voltage 2.5-5V  limit operating voltage 5.5V.<br> <br>Note: The left and right channel output of the "negative" can not  and then together  otherwise it will burn the IC and energized speaker (load) connected before.<br> <br>Tips: This module power supply should be clean and have enough power  input supply voltage can provide 1A or more current  otherwise blocked due to insufficient power supply sound ; such as a computer USB port power supply   the power supply can be connected to both ends 470UF electrolytic capacitors  otherwise there will be noise !<br>Packaging:<br>1pcs DC 5V 2 Channels 3W Digital Power D Audio Amplifier Module.<br><br><img src="//gdetail.image-gmkt.com/030/717423496/2016/4/af85668e-3410-4f5f-b6f1-ceec66089d63.jpg"  onerror="this.src='http://gdetail.image-gmkt.com/030/717423496/2016/4/af85668e-3410-4f5f-b6f1-ceec66089d63.jpg'; $(this).attr('onerror'，'');" ><br><br><br>Packaging Details<br>Unit Type: lot (10 pieces/lot) Package Weight: 0.050kg (0.11lb.) Package Size: 5cm x 5cm x 1cm (1.97in x 1.97in x 0.39in)<br><br><br><br>