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Green rectangular amplifier board with silver heatsink and black control knobs, 4.4 by 2.75 inches

ZK-502T 2.0 Channel Bluetooth 5.0 Amplifier Board 50W+50W AUX DC12-24V

SKU CH-KQ98-P5DBS

A 2.0-channel stereo amplifier board delivering 50W+50W via Bluetooth 5.0 or AUX with onboard treble and bass controls, running on 12-24V DC and protected against over-voltage, under-voltage.

  • Bluetooth 5.0 wireless streaming from phones and computers
  • 50W+50W stereo output drives two passive speakers
  • On-board treble and bass knobs shape sound instantly
  • Over-voltage, under-voltage, over-heat and short-circuit protection built in
  • Compact 4.4in x 2.75in x .78in board with labelled interfaces for quick DIY install

ZK-502T 2.0 Channel Bluetooth 5.0 Amplifier

This compact stereo amplifier board delivers 50W per channel into passive speakers. It accepts wireless audio via Bluetooth 5.0 and wired sources through an AUX input. The module includes independent treble and bass controls for direct tone shaping. Built-in protection circuits guard against over-voltage, under-voltage, over-heat and short-circuit conditions.

Check DC power supply and speaker impedance

The board requires a DC supply between 12 V and 24 V; verify your power source matches this range before connecting. Ensure your passive speakers are rated for 50 W operation to match the amplifier output. When using the AUX input, disconnect any active Bluetooth pairing first to avoid signal conflicts. The printed interface labels on the protective plate aid correct wiring.

Fits DIY speaker builds with minimal space

Measuring 4.4 in by 2.75 in by 0.78 in, the module slips into tight enclosures for home, outdoor or vehicle projects. The integrated tone controls eliminate the need for a separate preamp or equaliser in simple systems. Protection circuitry reduces the requirement for external safety components. A single DC supply powers both channels, simplifying the build.

Highlights

  • Bluetooth 5.0 wireless streaming from phones and computers
  • 50W+50W stereo output drives two passive speakers
  • On-board treble and bass knobs shape sound instantly
  • Over-voltage, under-voltage, over-heat and short-circuit protection built in
  • Compact 4.4in x 2.75in x .78in board with labelled interfaces for quick DIY install

Specifications

No published specifications for this item yet.

Questions about this item

Does the ZK-502T include speakers or a power supply in the box?

The board is sold alone; you must supply two passive speakers rated around 50 W each and a 12–24 V DC power source.

When should I use the Bluetooth 5.0 input versus the AUX input on the ZK-502T?

Use Bluetooth 5.0 for wireless streaming from a phone or tablet; switch to AUX only after disconnecting Bluetooth for a wired source such as a TV or computer.

What does the 50 W + 50 W rating mean for real-world volume on the ZK-502T?

It delivers up to 50 watts per channel into suitable passive speakers, giving ample loudness for a room, party or outdoor gathering when powered from 12–24 V DC.

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