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Small green circuit board with volume knob, Bluetooth 5.0 label, and speaker terminals

ZK-1002 Bluetooth 5.0 Amplifier Board 100W x 2 2.0 Channel Stereo Audio Component

SKU CH-33ZJ-MZTFQ

A compact stereo amplifier board delivering 100W per channel to passive speakers, with Bluetooth 5.0 and AUX inputs, volume control, and a 15-metre wireless range

  • Bluetooth 5.0 streams audio up to 15 m / 49 ft from phones or tablets
  • Dual TPA3116D2 chips deliver 100 W + 100 W stereo into 4–8 Ω speakers
  • Compact 8.5 × 5.3 × 2.2 cm board fits tight DIY enclosures
  • Distortion below .3 % keeps music clean at high volume
  • AUX input adds wired flexibility when Bluetooth is disconnected

ZK-1002 stereo amplifier board

The ZK-1002 is a compact Bluetooth 5.0 amplifier board delivering 100W per channel into 4-8 ohm passive speakers. It suits DIY builders who want a small 2.0 channel module for custom speaker projects or desktop audio upgrades. The board accepts both Bluetooth and AUX sources for flexible connectivity.

Thermals and power draw

The module operates from a DC 5-27V supply and uses two TPA3116D2 chips with AM interference suppression. Distortion stays below 0.3% at high output, while 684 film capacitors and four red and grey ring inductors provide clean power filtering. No active cooling is included, so adequate airflow around the board is advisable during extended high-power use.

Build integration

At 8.5 x 5.3 x 2.2 cm the board fits tight enclosures and leaves room for custom chassis design. Bluetooth 5.0 gives a 15m wireless range, while the AUX input requires the Bluetooth link to be disconnected first. The board frees the builder from sourcing a separate preamp and Bluetooth receiver, combining both functions in one module.

Highlights

  • Bluetooth 5.0 streams audio up to 15 m / 49 ft from phones or tablets
  • Dual TPA3116D2 chips deliver 100 W + 100 W stereo into 4–8 Ω speakers
  • Compact 8.5 × 5.3 × 2.2 cm board fits tight DIY enclosures
  • Distortion below .3 % keeps music clean at high volume
  • AUX input adds wired flexibility when Bluetooth is disconnected

Specifications

No published specifications for this item yet.

Questions about this item

How do I wire the ZK-1002 amplifier board to my passive speakers and power supply?

Connect speaker wires to the output terminals matching polarity, then supply DC 7-24V at 5A or higher. The board accepts 4-8 ohm speakers rated 20-200W. Disconnect Bluetooth before using AUX input.

What components on the ZK-1002 might need replacement after extended use?

The electrolytic capacitor array filters the power supply; these capacitors can dry out over time and may eventually require replacement to maintain low distortion below 0.3%.

At what point does the ZK-1002 hit its thermal limit during continuous high-volume playback?

Dual TPA3116D2 chips deliver 100W per channel into 4-8 ohm loads. Sustained full-power operation will trigger the chips' built-in thermal protection before any other limit is reached.

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