1PCS ZK-HT21 Bluetooth Amplifier Board,ZK-HT21 2.1 Channel 160W x 2+220W Subwoofer Stereo Mini Audio Power Amplifier Module TDA7498E HiFi Chips,BT USB AUX Input DC 15-36V for DIY Home Speakers

The Bluetooth amplifier board is equipped with two imported original TDA7498E chip, 2.1 Channel configuration, that is left channel (maximum power output 160W), right channel (maximum power output 160W) and subwoofer output (maximum power output 220W).; The bluetooth amplifier board with protection mechanism, including overvoltage, undervoltage, overheating, DC detection protection and short circuit protection; The speaker amplifier integrates AUX, Bluetooth, USB and Subwoofer Inputs. There is 3.5 MM AUX inputs, you can connect cellphone, laptop or TV etc (The wire connect AUX input is not included in the package).

With Bluetooth 5.0 version, it is easy to connect; This ZK-HT21 power amplifier is 2.1 channel, allows you to connect 2 passive speakers and drive a subwoofer, comes with Treble and Bass buttons, independent subwoofer volume adjustment buttons and 20-200Hz subwoofer frequency adjustment buttons, which is very friendly for audiophiles, you can adjust the Treble and Bass buttons, make the bass more shocking and the treble clearer, make the sound more layered; The Bluetooth amplifier board are suitable for 30-200W, 4-8 passive speakers, so you can match different passive speakers as your need.

(Passive speakers only, not Bluetooth speakers or active speakers). The Adapted power supply is DC 15-36V(less than 9V undervoltage protection. The higher voltage, the higher the output power)