<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div> <div> <div style="text-align:left;"> </div> <div style="text-align:center;"> <br /> </div> </div> <div style="padding:15px;border:1px solid #AEAEAE;"> <div style="text-align:left;"> <span style="color:black;font-family:inherit;font-size:12px;">ZK-ST21 Bluetooth-Compatible Digital Power Amplifier Board 2.1 Channel Digital Power Subwoofer Amplifier 100W+100W+200W Chip TPA3221 DC12-30V<br /> </span><strong>Feature:</strong><br /> <strong>1. High-Power Digital Amplifier Board:&nbsp;</strong><span>Experience superior sound quality with our digital power amplifier board, featuring high-current, low-magnetic loss, and low-heat design. Oxygen-free copper wiring enhances audio fidelity while magnetic shielding resists electromagnetic interference.</span><br /> <strong>2. Advanced Amplifier Module with Dual TPA3221 Chips:&nbsp;</strong><span>This amplifier module supports a 2.1-channel&nbsp;</span><span>Bluetooth-Compatible&nbsp;</span><span>digital amplifier with an impressive 100W+100W+200W output, ensuring powerful and clear audio for all your entertainment needs.</span><br /> <strong>3. Versatile Digital Power Subwoofer Amplifier:&nbsp;</strong><span>Our digital power subwoofer amplifier includes a subwoofer expansion port, compatible with 1602 and 3002 installations, offering flexibility and enhanced bass performance for your audio setup.</span><br /> <strong>4. Expandable Digital Amplifier Board:&nbsp;</strong><span>The digital amplifier board features multiple expansion ports, allowing easy connection to microphone preamp boards for reverb input or output, making it user-friendly and versatile for various audio applications.</span><br /> <strong>5. Comprehensive Protection with MP Board:</strong><span>&nbsp;The mp board is equipped with protection mechanisms, including input undervoltage, reverse polarity protection, overheat, overcurrent, and short circuit protection, ensuring reliable and safe operation.</span><br /> <div> <br /> </div> <br /><br/><br/><span><strong>Specification:</strong></span><br /> <span>Origin: Mainland China</span><br /> Product name: 2.1 channel BT amplifier board 100W+100W+200W<br /> Product model: ZK-ST21<br /> Applicable power supply: The working voltage range is 12-30VDC. It is recommended to use a DC power supply with a voltage of 24V-28V and a current of 10A or above.<br /> Maximum power: Left or right channel----105W@30V, 4Ω; 55W@30V, 8Ω. Subwoofer----208W@30V 2Ω; 105W@30V, 4Ω. In short, the higher the voltage, the smaller the resistance, and the greater the output power.<br /> Applicable speakers: Left and right channels support speakers up to 3-8Ω and 100W; subwoofer supports speakers up to 2-8Ω and 200W.<br /> BT chip: Jerry 5.1, transmission distance 15 meters<br /> Input method: BT+AUX+USB driver+sound card<br /> Number of channels: 2.1, left channel+right channel+subwoofer<br /> Power amplifier chip: two TI original TPA3221<br /> Protection mechanism: input undervoltage, input reverse connection protection, overheating, overcurrent, short circuit protection.<br /> Casing material: ABS<br /> Product size: about 124.00x100.00x24.00mm<br /> Product size: 4.88x3.94x0.94inch<br /> <br /> <br /> <p> <strong>Note:</strong><br /> Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding!<br /> Please allow a 1-2 cm difference in measurements due to manual measuring. </p> <br />&nbsp; </div> <div style="text-align:left;"> </div> </div> <div style="text-align:center;"> <br /> </div> </div> <div style="padding:15px;border:1px solid #AEAEAE;"> <div style="text-align:left;"> <span>1 x&nbsp;Bluetooth-Compatible&nbsp;Digital Power Amplifier Board</span>&nbsp; </div> <div style="text-align:left;"> &nbsp; </div> </div> <div style="text-align:center;"> <br /> </div> <div style="text-align:left;"> <br /> </div> <div style="text-align:left;padding:15px;border:1px solid #AEAEAE;"> <span> </span> </div> <p style="text-align:left;"> <br /> </p> <p style="text-align:center;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p> <p style="text-align:left;"> <br /> </p></div></div>