<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div><br/><span style="font-size:22px"><span style="font-family:Arial, Helvetica, sans-serif"><strong>Product Introduction:</strong></span></span><span style="font-size:18px"><span style="font-family:Arial, Helvetica, sans-serif"><br/>PAM8403 Mini D-Class Digital Amplifier Board<br/>1. Working voltage: 2.5V-5.5V. Attention: The power supply voltage should not exceed 5.5V, and the positive and negative terminals of the power supply should not be reversed.<br/>2. Speaker configuration: 4-8 euros, recommended: 4 euros; Speaker power: 2-8W.<br/>3. It can be powered by a computer USB port 5V power supply, a mobile phone charger USB port 5V power supply, or a lithium battery power supply.<br/>4. With a high efficiency of 90%, it can provide 3W (left channel)+3W (right channel) output power under 4 Ω load and 5V power supply conditions. The efficiency of A-class and B-class amplifiers is only around 30%, while D-class amplifiers are highly regarded in today&#x27;s green trend.<br/>Class D amplifiers have extremely high efficiency and do not affect sound quality due to temperature rise. They also do not require heat sinks and occupy a small volume.<br/></span></span><br/><span style="font-size:22px"><span style="font-family:Arial, Helvetica, sans-serif"><strong>Application:</strong></span></span><span style="font-size:18px"><span style="font-family:Arial, Helvetica, sans-serif"><br/>LCD TV, monitor<br/>Notebook computer<br/>Portable speaker<br/>Portable DVD player, game console<br/>Mobile phone/hands-free phone</span></span><br/><br/><span style="font-size:22px"><span style="font-family:Arial, Helvetica, sans-serif"><strong>Precautions for use:</strong></span></span><span style="font-size:18px"><span style="font-family:Arial, Helvetica, sans-serif"><br/>Connect the speaker first and then the power supply, otherwise it may cause damage to the chip;<br/>Due to the large gain of the digital volume control in the module, do not let the audio signal input be too large and cause signal cutting and limiting.</span></span><br/></div><p style="margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px;display:block;width:100%"></p></div></div><p><br/></p>