ZK-LT21 Bluetooth Audio Digital Power Amplifier Board Module 2.1 Channel 15W+15W+30W with Subwoofer

Features 1 Wide range of applications2 APP has a timer shutdown function3 Supports custom 10 segment sound effects to be adjusted arbitrarily to make up for the deficiencies so that different speakers can achieve better sound effects 4 The mechanical switch can be turned off with one turn no need to wait for a long time which is convenient and fast 5 Support Wuzhi Audio APP Modify and change for Bluetooth name password setting volume adjustment of prompt sound on off prompt sound sleep aid sound effect selection custom sound effect U disk playlistParameter Model ZK LT21Name 2 1 15WX2 30W Bluetooth audio power amplifier with subwooferAdapter power supply 9 24V 3A can not be connected to AC Bluetooth version 5 1Audio input BT AUX USB USB sound cardAudio output left channel 15W right channel 15W subwoofer 30WVolume adjustment classic mechanical knob with volume scale stepless adjustmentSwitch machine classic mechanical switch one turn switch machine no need to wait for a long time Adapter speaker 10 50W 4 8ΩProtection mechanism overheating overcurrent short circuit anti static protectionProduct weight net weight 66g including packaging 102gSpecial featureSupport Wuzhi Audio APP Modify and change the bluetooth name password setting volume adjustment of prompt sound on off prompt sound sleep aid sound effect selection custom sound effect U disk playlist Dimensions 76 60 22mmNote It is recommended to use an 8Ω speaker and power