<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><span style="font-size:20px"><strong>Product features:</strong></span><br/>1. Using a 4-channel mono audio mixing board of ne5532 or tda138, produced using SMT technology<br/>2. Each audio input is equipped with an independent volume potentiometer, which is controlled by an adjustable resistor<br/>3. It can simultaneously input 4 mono audio signals for mixed output<br/>5. Suitable for mixing 4-channel mono signal input with 1-channel output, without attenuation. For example, microphone voice and audio signals, etc<br/>5. Modular design, small size, only 33mm * 25mm<br/><br/><span style="font-size:20px"><strong>Product parameters:</strong></span><br/>NE5532 version working voltage: DC 6V-12V<br/>TDA1308 version working voltage: DC 3V-6V<br/>Size: 33mm * 25mm<br/>Input channel: 4-channel mono audio input<br/>Output channel: Mono mixed output<br/>Output amplification factor: about 1 time<br/>Attention: It is recommended to use a linear regulated power supply or battery power supply to avoid interference in series. Switching power supply requires attention to power interference issues. Modular design, once welded, does not return or replace. Please pay attention to whether it is compatible when purchasing.<br/><br/><span style="font-size:20px"><strong>inventory</strong></span><br/>1X module<br/><br/></div></div><p><br/></p>