Specification Brand : ARRAROWN BulletPoint1 : 【ZK-1001U MONO AMPFILIER BOARD】ZK-1001U Mini Bluetooth audio amplifier board is a mono channel amp with 100W rated power, only contact a passive speaker(20-100W, 3-8Ω), DC7-24V/4A above (Cannot be connected to AC, suitable for 7.4V/12V/21V etc. batteries, not suitable for 24V batteries)). this mono ampfilier with a TPA3116D2 chip, distortion rate below 0.3%, and the upgrade Bluetooth 5.3 chips support AAC decoding, APP and TWS, low latency BulletPoint2 : 【Outdoor Speaker Amplifier with Boost】Built-In Boost Circuit for Optimal Voltage Output 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. BulletPoint3 : 【TWS BOX FUNCTION】This ZK-1001U is a mono amp, this power amplifier module support TWS BOX mode, this couple of ZK-1001U mono power amps, you can use this two independent Bluetooth power amplifier boards connected by TWS box function, and left and right channel stereo can be realized BulletPoint4 : 【BLUETOOTH 5.3 INPUTS】The Bluetooth power amplifier board with 4 kind of inputs: AUX, USB flash drive, USB sound card and Bluetooth wireless connection, the upgrade large chips support Bluetooth 5.3, low latency, The range of audio devices (smartphones, tablets, laptops, etc.) with Bluetooth connectivity is 15m/49ft BulletPoint5 : 【HiFi AMP with Treble and Bass】ZK-1001U driven by TPA3116D2 chip, a high-performance class D power amplifier chip, it can make thedevice 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 with Treble and Bass,You can adjust the treble and bass to suit your musical preferences. BulletPoint6 : 【MULTIPLE FUNCTION KNOB】This mini amplifier only with a knob, it is 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 Color : Black4 ZK-1001U ItemName : ZK-1001U Bluetooth 5.3 Mono Amplifier Board with TWS, Mini Audio Amp with Boost for Home Outdoor DIY Speakers with 100W Power Output, Treble and Bass, Supports USB/AUX/BT Input, DC 9-24V ItemPackageDimensions_Height : 2.7 inches ItemPackageDimensions_Length : 1.57 inches ItemPackageDimensions_Width : 4.7 inches ItemPackageQuantity : 1 ItemTypeKeyword : audio-component-amplifiers Manufacturer : ARRAROWN ModelNumber : ZK-1001U NumberOfBoxes : 1 PartNumber : ZK-1001U ProductDescription : ZK-1001U Bluetooth 5.3 Mono Amplifier Board with TWS, Mini Audio Amp for Home DIY Speakers with 100W Power Output, Treble and Bass, Supports USB/AUX/BT Input, DC 9-24V ProductSiteLaunchDate : 2025-05-27T03:13:00.120Z SupplierDeclaredDgHzRegulation : waste UnspscCode : 52161547 WarrantyDescription : 2 Years