<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><br/></div></div><div class="detailmodule_dynamic"><kse:widget data-widget-type="customText" id="1005000004074434" type="relation"></kse:widget></div><div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div><strong><br/>Product selling point:</strong><br/><br/><span style="font-size:18px">1: Wide range of applications<br/><br/>2: The appearance is simple and beautiful<br/><br/>3: APP has comprehensive functions<br/><br/>4: Real stepless tuning, not digital multi-stage grading adjustment.<br/><br/>5: The mechanical switch can be turned off with one turn, no need to wait for a long time, which is convenient and fast.<br/><br/><br/>Product name: 2.1 channel bluetooth audio power amplifier module<br/><br/>Product Model: ZK-AS21<br/><br/>Number of channels: 2.1 channels (left channel + right channel + subwoofer)<br/><br/>Input method: AUX+Bluetooth+U disk+USB sound card (dial button to switch modes and songs)<br/><br/>Bluetooth version: 5.1<br/><br/>Power amplifier chip: TPA3255<br/><br/>Adapter speakers: left and right channels 30-220W, 3-8Ω subwoofer 30-350W 2-8Ω<br/><br/>Output power: left and right channels ≤ 220w subwoofer ≤ 350W<br/><br/>Adapter power supply: DC 16-38V, ≥10A<br/><br/>Protection mechanism: anti-reverse connection, undervoltage, overheating, overcurrent, short circuit protection (automatic recovery, no need to restart)<br/><br/>Switch mode: mechanical switch (no need to long press and wait)<br/><br/>Voltage gain: 30dB<br/><br/>Product weight: net weight 346g, including packaging 408g<br/><br/>Product size: 141*131*27mm</span><br/><br/><br/><strong><span style="font-size:22px">Tip: </span></strong><br/><br/><span style="font-size:18px">Only when the audio signal input is large enough and the power supply voltage/current is large enough, will there be enough output power!<br/><br/>The higher the power supply voltage, the greater the output power, and the smaller the speaker impedance, the greater the output power!<br/><br/>Please make sure that the power of the adapted power supply is greater than the actual working power of the power amplifier!</span><br/><br/><br/><br/><span style="font-size:22px"><strong>The package includes:</strong></span><span style="font-size:18px"><br/><br/>1* 2.1 channel TPA3255 Bluetooth digital power amplifier board module</span><br/><br/></div><div><br/></div></div></div><p><br/></p>