2PCS ZK-1001U Mono Amplifier Board, 100W Bluetooth5.3 Amplifier with TPA3116D2 Chip, Mini Amplifier Board with Boost, Treble and Bass for Home Audio DIY Speakers, Supports USB/AUX/BT Input, DC 9-24V

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More features

• TURN MONO INTO FULL STEREO: With TWS function, pair two ZK-1001U boards wirelessly to create a true left-right stereo system. No complicated wiring, no extra receivers—just pure, wide soundstage from two compact amps. Perfect for DIY stereo builds or upgrading old mono speakers.
• HIFI AMP WITH INDEPENDENT BASS & TREBLE TUNING: Driven by the TPA3116D2 chip, this portable mono amplifier board delivers rich, detailed sound with ultra-low distortion (<0.3%). Unlike basic amps, it features dedicated treble and bass knobs, so you can tailor the sound to your taste—boost the lows for movies, sharpen the highs for vocals. Note: 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)).
• BUILT-IN BOOST CIRCUIT: Say goodbye to weak, distorted sound outdoors. The ZK-1001U features an intelligent auto-boost circuit that steps up 9V/15V input to a stable 19V or 24V (default: 24V. Red switch to 1 is 24V, to ON is 19V) for full 100W output. No more volume drop when the battery drains.Perfect for battery-powered outdoor use, like camping, beach days, and backyard BBQs.
• BLUETOOTH 5.3 WITH 15M/49FT RANGE: Equipped with the latest Bluetooth 5.3 chip, this amp delivers stable wireless transmission up to 15 meters (49ft). Walk around your backyard, patio, or workshop—your music stays with you. Upgraded Bluetooth 5.3 chip with AAC decoding delivers low-latency, high-fidelity audio. Also supports AUX, USB drive, and USB sound card input for total flexibility.
• ALL-IN-ONE CONTROL KNOB: Precision 3-Knob EQ Control + Smart Multifunction Button Three dedicated knobs for master volume, bass, and treble fine-tuning. The volume knob doubles as a smart button: Single press: Play/Pause Double press: Next track, Triple press: Toggle TWS on/off, Long press: Power on/off.