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Green rectangular circuit board with silver heatsink and black connectors

TW100U 100W Mono Bluetooth 5.3 Amplifier Board

SKU CH-2A86-2QNXQ

Delivers 100 W mono output via TPA3116D2 with Bluetooth 5.3, USB and AUX inputs, plus TWS pairing for wireless stereo

  • Bluetooth 5.3 enables stable wireless streaming
  • TWS pairing creates wireless stereo from two boards
  • 100 W mono output drives DIY speakers loud
  • Built-in boost to 19 V or 24 V maximises chip performance
  • THD below .1 % keeps audio clean

Mono amplifier board for DIY speakers

The TW100U is a 100W single-channel Class-D board built around the TPA3116D2 chip for hobbyists building custom speaker cabinets. It accepts DC input from 12 to 24V and includes Bluetooth 5.3, Bluetooth 5.0, AUX and USB flash-drive playback so you can stream from a phone, wire a PC or play local files without a separate source device.

Integrated boost and protection keep output stable

An on-board step-up circuit raises the supply to 19V or 24V, letting the amplifier deliver full rated power even from a 12V source. Total harmonic distortion stays below .1% at high output, while over-voltage, under-voltage, over-temperature and short-circuit safeguards protect the module during extended use. A dense-fin heatsink dissipates heat without active cooling, so the board runs silently in normal operation.

Pair two boards wirelessly for stereo without

True Wireless Stereo linking syncs a second TW100U over Bluetooth to create left and right channels, removing the need for an inter-board signal wire. The module requires only a DC power supply in the supported range and your chosen speaker drivers; it frees you from running a separate pre-amp or source selector because input switching is handled on the board itself.

Highlights

  • Bluetooth 5.3 enables stable wireless streaming
  • TWS pairing creates wireless stereo from two boards
  • 100 W mono output drives DIY speakers loud
  • Built-in boost to 19 V or 24 V maximises chip performance
  • THD below .1 % keeps audio clean

Specifications

No published specifications for this item yet.

Questions about this item

How do I wire the TW100U board to a 12V or 24V power supply and what polarity mistake should I avoid?

Connect a DC supply between 12V and 24V to the power terminals, observing the marked positive and negative symbols; reversing them will trigger the board's protection circuit and prevent operation.

Will the heatsink on the TPA3116D2 chip need any attention after months of use?

The dense-fin heatsink is passive; periodically remove dust from the fins with compressed air so airflow is not blocked and the thermal protection does not engage during long sessions.

At what volume level does the built-in voltage boost hit its 24V ceiling and limit output power?

When the board drives a 4 Ω load near its 100W rating the boost converter reaches its 24V maximum, so sustained full-power playback will be limited by that rail voltage.

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