<p><span style="font-size:18px"><strong>Note:</strong></span></p><p><br/></p><p><span style="font-size:18px">The link contains four different models of amplifier boards: </span><strong><span style="color:rgb(0, 98, 177);font-size:18px"><u>ZK-MT21</u></span></strong><strong><span style="font-size:18px"><u>/</u></span></strong><strong><span style="color:rgb(159, 5, 0);font-size:18px"><u>C100L</u></span></strong><strong><span style="font-size:18px"><u>/</u></span></strong><strong><span style="color:rgb(251, 158, 0);font-size:18px"><u>C50L</u></span></strong><strong><span style="font-size:18px"><u>/</u></span></strong><strong><span style="color:rgb(171, 20, 158);font-size:18px"><u>C15H</u></span></strong><strong><span style="font-size:18px">. </span></strong></p><p><br/></p><p><span style="color:rgb(0, 0, 0);font-size:18px">There are two types of C15H/C50L: </span><strong><span style="color:rgb(244, 78, 59);font-size:18px">bare board and full board.</span></strong></p><p><br/></p><p><span style="font-size:18px">Please choose according to your own needs. Please check your order before making payment~thanks!</span></p><p><br/><br/><span style="background-color:rgb(251, 158, 0);font-size:18px"><strong>Model:ZK-MT21</strong></span></p><p><br/></p><p><span style="color:rgb(159, 5, 0);font-size:18px"><strong>(Bluetooth 5.0/2.1 Channel/AUX+Bluetooth audio input/Subwoofer + left and right channel output)</strong></span></p><p><br/></p><p><span style="font-size:16px"><br/></span><strong><span style="font-size:18px">Description:</span></strong></p><p><span style="font-size:16px"><br/>1.This kind of bluetooth audio power amplifier module is a good replacement for the damaged bluetooth module, which can provide you with good performance.</span></p><p><span style="font-size:16px"><br/>2.This 2.1 channel power amplifier is easy to change, you can install and use it conveniently.</span></p><p><span style="font-size:16px"><br/>3.This kind of 2.1 channel audio amplifier provides you with stable and quick connection, which works with wide compatibility.</span></p><p><span style="font-size:16px"><br/>4.This power amplifier module supports 2 input modes, including bluetooth and Aux, you can order according to your need.</span></p><p><span style="font-size:16px"><br/>5.This kind of audio amplifier is enough to meet your different needs, you can adjust the frequency, volume, high pitch, low pitch, etc.</span></p><p><br/></p><p><span style="font-size:16px"><br/></span><span style="font-size:18px"><strong>Specification:</strong></span></p><p><span style="font-size:16px"><br/>--Material: electronic components</span></p><p><span style="font-size:16px"><br/>--Color: black</span></p><p><span style="font-size:16px"><br/>--Size: 93x90x22mm</span></p><p><span style="font-size:16px"><br/>--Bluetooth version: 5.0</span></p><p><span style="font-size:16px"><br/>--Audio input: AUX, bluetooth</span></p><p><span style="font-size:16px"><br/>--Channel: 2.1</span></p><p><span style="font-size:16px"><br/>--Power: DC12-24V / 5A</span></p><p><span style="font-size:16px"><br/>--Adapter speaker: 20-100W, 4-8Ω</span></p><p><span style="font-size:16px"><br/>--Output power: max 50W(right and left sound track), max 100W(subwoofer)</span></p><p><br/></p><p><span style="font-size:16px"><br/></span><strong><span style="font-size:18px">Note:</span></strong></p><p><span style="font-size:16px"><br/>1.Due to the light and screen difference, the item&#x27;s color may be slightly different from the pictures.</span></p><p><span style="font-size:16px"><br/>2.Please allow a slight deviation for the measurement data and make sure you do not mind before ordering.</span></p><p><br/></p><p><span style="font-size:16px"><br/></span><strong><span style="font-size:18px">Package included:</span></strong></p><p><span style="font-size:16px"><br/>1x ZK-MT21 power amplifier module.(the case needs to assemble)</span></p><p><br/></p><p><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:18px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><strong><span style="background-color:rgb(255, 140, 0);font-size:18px">Model:C100L</span></strong></span><br/><br/><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><span style="font-size:18px"><strong>Feature:</strong></span></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>1. Independent adjustment of high and bass of left and right channels, independent adjustment of heavy bass, 360 degree stepless tuning.</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>2. Mobile APP control. APP visual operation playback mode, support for Apple Android (please download in for Google Market, search &#x27;Sinilink&#x27; download).</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>3. The main knob adopts the rotary encoder only used in high-end power amplifier, realizing the smooth feel of 360 degree stepless tuning with one key to start and stop, and long press the switch is simple and convenient to operate.</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>4. Using domestic class -D power amplifier chip scheme, high efficiency, good distortion and anti - squeaking sound, sound quality transparent, strong driving force</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>5. The use of special thermal silica gel paste large area heat sink, close to the shell of copper heat dissipation, heat dissipation area doubled, to ensure full power and high performance operation of the product.</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>6. Supported audio input: Bluetooth-compatible 5.0, AUX, sound card input, USB flash drive playback (USB flash drive file system must be FAT32, the maximum support 32GB)<br/></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/></span><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><span style="font-size:18px"><strong>Specification:</strong></span></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Number of channels: left and right double channels (stereo)</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Applicable horn: 4-8 Ohms, 30-300W</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Power supply voltage: DC 5~26V(the higher the voltage, the greater the output power)</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Chip solution: Class-D power amplifier chip</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Bluetooth-compatible version: 5.0</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Transmission distance: 15m (no shielding)</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Volume adjustment: encoder 360 degrees stepless tuning</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Audio input: Bluetooth-compatible +AUX+ USB disk +USB sound card</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Audio output: passive speaker +3.5mm</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Audio interface: None</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Output power: 100W*2</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>--Output filter: filter free</span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--Heat dissipation mode: heat sink + shell<br/></span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--Protection mechanism: power reverse connection protection, short circuit protection, self-recovery overheating protection<br/></span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--Complimentary cool features: The mobile APP supports for Android/iOS<br/></span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--12V-8 Ohm 12W +12W, 4 Ohm 22W +22W<br/></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--19V-8 Ohm 28W+28W, 4 Ohm 55W+55W<br/></span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--22V-8 Ohm 37W+37W, 4 Ohm 72W+72W<br/></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--24V-8 Ohm 51W +51W, 4 Ohm 100W +100W<br/></span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--Size (with shell) : 58mm*53mm*18mm/2.2X2.1X0.7in<br/></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun">--Weight: 70g</span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/></span><span style="font-size:18px"><strong>Package included:</strong></span></p><p><br/></p><p><span style="font-size:16px">1x C100L amplifier board</span></p><p><br/></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/></span><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><span style="font-size:18px"><strong>Note:</strong></span></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>1.The output power of the power supply should be greater than the output power of the amplifier, otherwise it will affect the sound quality<br/>2.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!<br/>3.Please allow 1-2cm measuring deviation due to manual measurement.</span><br/><br/><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><span style="font-size:18px"><strong>NOTE:</strong></span></span></p><p><span style="background-color:rgb(255, 255, 255);color:rgb(34, 34, 34);font-size:16px;font-family:&quot;Open Sans&quot;, Roboto, Arial, Helvetica, sans-serif, SimSun"><br/>1.For DIY---The outer casing is a material package, It needs to be assembled by itself, and the material package is given a screwdriver.<br/><br/>2.---Attention!The heat sink tape 3M glue needs to be pasted to the chip by itself. Please refer to the picture in the description. The hotter the more sticky the thermal conductivity is.The shell version needs to be assembled by yourself. Screwdriver is given with the shell version.<br/><br/>3.For use---The power switch on the board is standby switch. After the switch is off, the machine is in standby state with low power consumption. If the power is completely turned off or the DC plug on the machine can be unplugged for a long time.</span></p><p><br/></p><p></p><p><br/></p><p><span style="color:rgb(0, 0, 0);font-size:18px"><strong><span style="background-color:rgb(255, 140, 0);color:rgb(0, 0, 0);font-size:18px">Model:XY-C50L</span></strong></span><br/><br/><span style="font-size:18px"><strong>Description:</strong></span></p><p><br/><span style="font-size:16px">This digital power amplifier board with high fidelity and two-channel stereo sound quality; input voltage is DC~24V, audio input supports Bluetooth, AUX, USB Input, can be directly connected to mobile phone, MP3, etc.</span><br/><br/><span style="font-size:18px"><strong>Specification:</strong></span></p><p><span style="font-size:16px"><br/>--Input voltage: DC5-24V<br/>--Bluetooth Version: 5.0<br/>--Output impedance: 4~16ohm Speaker<br/>--For Speakers: 10W~200W<br/>--Output power: 50W*2<br/>--Audio input: Bluetooth, AUX, USB<br/>--Number of channels: two channels</span><br/></p><p><br/><span style="font-size:18px"><strong>Package included:</strong></span></p><p><br/><span style="font-size:16px">1x C50L amplifier board</span><strong><span style="color:rgb(159, 5, 0);font-size:16px">（Bare board/full board optional）</span></strong></p><p><br/><br/><br/><br/><br/></p><p><br/></p><p><span style="background-color:rgb(251, 158, 0);font-size:18px"><strong>Model:C15H</strong></span></p><p><br/></p><p><span style="font-size:18px">Stepless tuning using rotary encoder used by high-end speakers</span></p><p><br/></p><p><span style="font-size:18px">Smooth feel with one-key start and stop</span></p><p><br/><br/></p><p><br/><br/><br/><br/></p><p><strong><span style="font-size:18px">Product parameters:</span></strong></p><p><br/></p><p><br/><br/></p><p><span style="font-size:16px">--Product name: 20W+20W Bluetooth audio power amplifier board</span></p><p><br/></p><p><span style="font-size:16px">--Product model: XY-C15H</span></p><p><br/></p><p><span style="font-size:16px">--Power supply: DC9-24V/2A and above</span></p><p><br/></p><p><span style="font-size:16px">--Bluetooth Version: 5.0</span></p><p><br/></p><p><span style="font-size:16px">--Audio input: Bluetooth + AUX input</span></p><p><br/></p><p><span style="font-size:16px">--Transmission distance: 15 meters (unobstructed)</span></p><p><br/></p><p><span style="font-size:16px">--Volume adjustment: high-end encoder knob adjustment, smooth feel</span></p><p><br/></p><p><span style="font-size:16px">--Adapter speaker: 10W-100W /4 ohm-16 ohm</span></p><p><br/></p><p><span style="font-size:16px">--Output power: 20W*2</span></p><p><br/></p><p><span style="font-size:16px">--Protection mechanism: electrostatic protection, overheating protection, overcurrent protection, short circuit protection</span></p><p><br/></p><p><span style="font-size:16px">--Unique function: support Sinilink-APP control</span></p><p><br/></p><p><span style="font-size:16px">--Product size: 67 x 47mm</span></p><p><br/></p><p><span style="font-size:16px">--Colour: black</span></p><p><br/></p><p><span style="font-size:16px">--Material: PCB circuit board</span></p><p><br/><br/></p><p><span style="font-size:18px"><strong>Package included:</strong></span></p><p><br/><span style="font-size:16px">1x C15H amplifier board</span><strong><span style="color:rgb(159, 5, 0);font-size:16px">（Bare board/full board optional）</span></strong></p><p><br/><br/></p><p><strong><span style="font-size:18px">Note: </span></strong></p><p><br/></p><p><span style="font-size:16px">When using a 4 ohm speaker, the power supply cannot exceed 12V;<br/> Use 8 ohm speakers, the power supply can not exceed 24V.</span></p><p><br/></p><p><br/><br/></p><p><span style="font-size:16px">Only the above package content, other products are not included.</span></p><p><br/></p><p><br/><br/></p><p><span style="font-size:16px">Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.</span></p><p><br/></p><p></p><p><br/></p><p><br/></p>