<div class="detailmodule_dynamic"><kse:widget data-widget-type="relatedProduct" id="1005000004074434" title="" type="relation"></kse:widget></div> <div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><br /><strong><span style="font-size: 20px;">Product features:</span></strong><br /><br />1. Adopting a fever grade chip QCC3034+PCM5102+TPA3223+NE5532 (TI), supporting a 32bit 384KHZ sampling rate, air-cooled heat dissipation, 15-40VDC power supply, and sufficient power<br /><br />2. Adopting high-power digital power amplifier dedicated inductors, high current, low magnetic loss, low heat generation, and using oxygen free copper wires to improve sound quality; The magnetic shielding mechanism is resistant to electromagnetic interference<br /><br />3. Using 5 TI original NE5532 operational amplifiers to maintain signal purity and high fidelity sound quality, the DIP8 operational amplifier socket is fully gold-plated with low transmission resistance and good transmission characteristics, allowing for free replacement of operational amplifiers<br /><br />4. Subwoofer signal output expansion port, compatible with ZK-3002, karaoke board expansion port, supporting the installation of ZK-AMP<br /><br />QCC3034 Qualcomm module, supporting transmission encoding SBC, AAC, APTX, APTX-LL, APTX-HD<br /><br /><strong><span style="font-size: 20px;">Product parameters:</span></strong><br /><br />Product name: 2.1 channel Qualcomm Bluetooth amplifier board 200W+200W+400W<br /><br />Product model: ZK-APTX2<br /><br />Adapted power supply:<br /><br />The working voltage range is 15-40VDC, and it is recommended to use a DC power supply with a voltage of 32V-36V and a current of 10A or more. Be careful not to use AC power directly from the Huan Niu transformer. It must be rectified, filtered, and tested for DC voltage within 40V before wiring can proceed.<br /><br /><strong><span style="font-size: 20px;">Maximum power:</span></strong><br /><br />Left or right vocal tract&mdash;&mdash; 200W@40V , 4 &Omega;; 300@40V , 3 &Omega;.<br /><br />Subwoofer&mdash;&mdash; 425W@40V 2 &Omega;; 200W@40V , 4 &Omega;. In short, the higher the voltage, the smaller the resistance, and the greater the output power.<br /><br />Adapted speakers: left and right channels, supporting speakers up to 3-8 ohms and up to 200W; The subwoofer supports 2-8 ohms and speakers up to 400W.<br /><br />Bluetooth chip: QCC3034, transmission distance of 15 meters.<br /><br />Input method: Bluetooth+AUX, Bluetooth priority, Bluetooth needs to be disconnected when using audio cable input.<br /><br />Number of channels: 2.1, left channel+right channel+subwoofer<br /><br />Power amplifier chip: Two TI original TPA3223<br /><br />Protection mechanism: Input undervoltage, input anti reverse connection, overheating, overcurrent, short circuit protection.<br /><br />Product size: 152x120x37mm<br /><br /><strong><span style="font-size: 20px;">Product List:</span></strong><br /><br />1X amplifier board<br /><br />1X accessory package<br /><br /><strong><span style="font-size: 20px;">Attention:</span></strong><br /><br />Installing an external antenna (special scenario)<br /><br />1. The boards are equipped with onboard antennas, with a normal distance of 10-15 meters. If they are installed in a metal shell (which will block the signal) or increase the Bluetooth distance (20-30 meters), external antennas will be used.<br /><br />2. Customers need to purchase an additional 2.4G antenna (including antenna extension cable and antenna rod), which is not included in this product.<br /></p></div></div>