2 Pack ZK-1001U Bluetooth 5.3 Mono Amplifier Board with TWS & Boost Circuit Mini Audio Amp for Home Outdoor DIY Speakers with 100W Power Output, Treble and Bass, USB/AUX/BT Input, DC 9-24V

ZK-1001U MONO AMPLIFIER BOARD
The ZK-1001U Mini Bluetooth audio amplifier board is a mono channel amp with 100W rated power. It only connects to a passive speaker (20-100W, 3-8) and requires DC7-24V/4A or above (cannot be connected to AC; suitable for 7.4V /12V/21V batteries, not suitable for 24V batteries). This mono amplifier uses a TPA3116D2 chip, with distortion rate below 0.3 %, and the upgraded Bluetooth 5.3 chips support AAC decoding, APP and TWS, with low latency. Outdoor Speaker Amplifier with BoostBuilt-In Boost Circuit for Optimal Voltage Output. It features an auto-boosting circuit that intelligently adjusts input voltage (9V/15V) to a stable 19V or 24V (default: 24V. Red switch to 1 is 24V, to ON is 19V). This flexible voltage is ideal for outdoor use with battery-powered speakers. TWS BOX FUNCTION
Set of 2 pack of ZK-1001U. As a mono amp, this power amplifier module supports TWS BOX mode. With this pair of ZK-1001U mono power amps, you can use these two independent Bluetooth power amplifier boards connected by the TWS box function, and left and right channel stereo can be realized. BLUETOOTH 5.3 INPUTS
The Bluetooth power amplifier board has 4 kinds of inputs: AUX, USB flash drive, USB sound card and Bluetooth wireless connection. The upgraded large chips support Bluetooth 5.3 with low latency. The range of audio devices (smartphones, tablets, laptops, etc. ) with Bluetooth connectivity is 15m/49ft. HiFi AMP with Treble and BassThe ZK-1001U is driven by a TPA3116D2 chip, a high-performance class D power amplifier chip. It can make the device maintain ultra-low distortion in the whole audio frequency band and show high-definition sound quality at the same time. This mini audio power amplifier has Treble and Bass; you can adjust the treble and bass to suit your musical preferences. MULTIPLE FUNCTION KNOB
This mini amplifier has only a multiple function knob: Turn the knob clockwise/counterclockwise to adjust the volume level.
Click: Play/pause.
Double click: Next song.
Three Click: Enter or exit TWS mode.
Long press: Turn off/on