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Small green circuit board with silver heatsink, two large control knobs, multiple pin headers and a micro USB port

ZK-1001U Mono Amplifier Board 100W Bluetooth 5.3 TPA3116D2

SKU CH-9504-QVKEZ

Delivers 100 W mono output with Bluetooth 5.3, TWS stereo pairing, bass/treble controls, USB/AUX input and 9–24 V DC operation

  • TWS pairs two boards for true stereo sound
  • TPA3116D2 chip delivers
  • Auto-boost circuit raises 9 V to 24 V for full 100 W output
  • Bass and treble knobs plus volume knob with click controls
  • Bluetooth 5.3 streams lossless formats up to 15 m range

Mono amplifier with TWS stereo pairing

The ZK-1001U is a mono Class D amplifier board built around the TPA3116D2 chip. It delivers up to 100W output into a passive speaker rated 20-100W and 3-8 ohms. A single rotary knob controls volume, playback and TWS pairing. Bluetooth 5.3 provides wireless streaming up to 15m with support for MP3, WMA, WAV, FLAC and APE files. Dedicated bass and treble knobs allow tonal adjustment without external DSP.

DIY builders wanting portable stereo

This board suits hobbyists building compact speakers, upgrading vintage cabinets or creating battery-powered outdoor systems. The auto-boost circuit steps 9V or 15V input up to a stable 19V or 24V for full power, making it practical with 7.4V, 12V or 21V battery packs. It is not for installers needing AC mains input, multi-channel surround decoding or integrated streaming services. Buyers requiring rack-mount enclosures or balanced XLR connections should look elsewhere.

100W into 3-8 ohms with 9-24V DC supply

At 24V the board reaches its rated 100W continuously; at 19V headroom drops but protection circuits prevent shutdown. The boost circuit maintains output as battery voltage sags, so a 12V pack sustains loud playback longer than a direct-drive design. Distortion stays below 0.3% at typical listening levels. The amplifier cannot drive loads below 3 ohms or above 8 ohms efficiently, and 24V batteries are explicitly excluded due to over-voltage risk.

Highlights

  • TWS pairs two boards for true stereo sound
  • TPA3116D2 chip delivers
  • Auto-boost circuit raises 9 V to 24 V for full 100 W output
  • Bass and treble knobs plus volume knob with click controls
  • Bluetooth 5.3 streams lossless formats up to 15 m range

Specifications

No published specifications for this item yet.

Questions about this item

What power source must I already have to run this 100 W mono amplifier board?

You need a DC supply between 9 V and 24 V that can deliver at least 4 A; suitable examples are a 12 V adapter, a 7.4 V battery pack, or a 21 V battery, but not a 24 V battery.

Can I keep my existing passive speakers and just add this board?

Yes, the board drives passive speakers rated 20–100 W with an impedance of 3–8 Ω, so most bookshelf or DIY drivers will work without replacement.

How do I confirm the two boards are paired in TWS stereo mode after setup?

Double-click the rotary knob on either board; the modules will enter or exit TWS mode and the audio will split into left and right channels, confirming the wireless stereo link is active.

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