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Green circuit board with silver heatsinks and black control knobs in protective case

Bluetooth 5.1 2.1CH Amplifier Board 50W x2 + 100W Subwoofer

SKU CH-2HJP-5NP99

A compact 2.1-channel amplifier board delivering 50 W per satellite and 100 W to a subwoofer, with Bluetooth 5.1, AUX input and dedicated treble and bass controls

  • Bluetooth 5.1 streams audio wirelessly up to 50ft
  • Dual TPA3116D2 chips deliver 100W subwoofer plus 50W per satellite
  • Independent treble and bass knobs shape sound without a separate preamp
  • Built-in over-voltage, under-voltage, over-heat and short-circuit protection keeps the board safe
  • Compact 3.9×3.5×0.6 inch case fits tight DIY enclosures

Compact 2.1-Channel Amplifier Board

This Bluetooth 5.1 amplifier board delivers 50W per stereo channel and 100W to a subwoofer using dual TPA3116D2 chips. It accepts wireless Bluetooth 5.1 and wired AUX inputs for DIY speaker projects. The compact module measures 3.9 by 3.5 by 0.6 inches and includes a protective case with labelled interfaces.

Simple Wiring With Labelled Terminals

Copper DC connectors and insulated terminals handle high current without overheating. The protective plate prints every interface label directly on the board so installation is straightforward without a manual. Remember to disconnect the Bluetooth link before switching to AUX mode or the input will not change.

Verify Power Supply And Speaker Impedance

The board requires a DC supply between 12V and 24V capable of at least 5A. Output power varies with voltage and speaker load: 20W per channel at 12V into 8Ω, 35W at 12V into 4Ω, 35W at 19V into 8Ω, and 60W at 19V into 4Ω. Ensure your speakers fall within the 4Ω to 8Ω range and that your power source meets the current demand.

Highlights

  • Bluetooth 5.1 streams audio wirelessly up to 50ft
  • Dual TPA3116D2 chips deliver 100W subwoofer plus 50W per satellite
  • Independent treble and bass knobs shape sound without a separate preamp
  • Built-in over-voltage, under-voltage, over-heat and short-circuit protection keeps the board safe
  • Compact 3.9×3.5×0.6 inch case fits tight DIY enclosures

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the amplifier is working correctly after wiring the speakers and power supply?

Pair a phone via Bluetooth 5.1, play audio, and verify sound from both stereo channels and the subwoofer; the THD stays at 0.1% and signal-to-noise exceeds 90 dB.

What comes in the box and what must I source separately?

The board includes a protective case with printed interface labels, dual TPA3116D2 chips, treble and bass knobs, Bluetooth 5.1 and AUX inputs, and copper DC terminals; you must supply a 12 V–24 V DC power source rated above 5 A and passive speakers of 4–8 Ω.

Which power-supply voltage should I choose for the output I want?

At 12 V into 8 Ω you get 20 W per channel, at 12 V into 4 Ω you get 35 W per channel, at 19 V into 8 Ω you get 35 W per channel, and at 19 V into 4 Ω you get 60 W per channel.

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