ZK-R21H Bluetooth Sound Power Amplifier Board 2.1 Channel Mini Audio Digital Amp Module TPA3116D2 50Wx2+100W Subwoofer

Feature 1 2 1 channel bluetooth audio amplifier2 50W 50W 100W subwoofer3 High end audio experience4 Power amplifier chip TPA3116D25 Features Support Wuzhi Audio APP Modify the bluetooth name password settings promptsSound volume adjustment on off prompt sound sleep aid sound effect selection custom sound effect U disk playlist volume indicator brightness adjustment Specification Model ZK R21HName 2 1 channel 50W 50W 100W subwoofer stereo bluetooth audio power amplifierPower amplifier chip TPA3116D2Bluetooth version 5 1Audio input Bluetooth AUX U disk USB sound cardAudio output left channel 50W right channel 50W subwoofer 100WAdapter power supply DC9 24V ≥7A can not be connected to AC Adapter speakers left and right channels 15 50W 4 8Ω subwoofer 30 100W 4 8Ω Volume adjustment multi function knob 360 degree stepless tuning with volume level indication Click Play PauseDouble click mode switch Bluetooth U disk AUX Press and hold for 1 second turn on offRotate adjust the volumeProtection mechanism over temperature over current short circuit anti static protectionFeatures Support Wuzhi Audio APP Modify the bluetooth name password settings promptsSound volume adjustment on off prompt sound sleep aid sound effect selection custom sound effect U disk playlist volume indicator brightness adjustment Product size 81x81x37mmProduct weight net weight 106g including packaging 150gPackage includes 1 x ZK R21H power amplifier board