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Trigger Sound Effects with Built-In Amp — Adafruit Audio FX Board 16MB + 2×2W
The Adafruit Audio FX Sound Board + 2×2W Amp (16MB) plays WAV and OGG audio files triggered by GPIO pins — no microcontroller needed. Just load your sound files onto the onboard 16MB flash via USB, connect trigger pins to buttons or sensors, and it plays the corresponding sound through the built-in 2×2W stereo amplifier. Plug in speakers and go.
Audio FX board comparison
| Board | Flash | Built-in amp | Best for |
|---|---|---|---|
| Audio FX 2MB | 2 MB | No (line out only) | Short sound effects, external amp |
| Audio FX 16MB | 16 MB | No (line out only) | Longer clips, external amp |
| Audio FX 16MB + Amp (this) | 16 MB | Yes (2×2W stereo) | All-in-one, direct to speakers |
Technical specifications
| Flash Storage | 16 MB |
|---|---|
| Audio Formats | WAV (16-bit PCM, up to 22 KHz), OGG Vorbis (up to 44.1 KHz) |
| Built-in Amp | Yes — 2×2W Class D stereo |
| Trigger Pins | 11 trigger inputs |
| Interface | USB for file loading, GPIO triggers, UART for advanced control |
| Supply | 3.3–5.5V |
Frequently Asked Questions
Do I need an Arduino? No. The board triggers sounds from GPIO pins directly. But you can also control it via UART from any microcontroller.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Compatibility & downloads
// downloads
- GitHub PCB repo git
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