Adafruit
Adafruit Audio FX Sound Board - WAV/OGG Trigger - 16MB storage with 2x2W Amp
The Adafruit Audio FX Sound Board with 2×2W Amp is a standalone audio trigger with a built-in stereo Class D amplifier — no Arduino or programming required. ...
The Adafruit Audio FX Sound Board with 2×2W Amp is a standalone audio trigger with a built-in stereo Class D amplifier — no Arduino or programming required. Simply drag and drop WAV or OGG sound files over USB, wire up buttons and speakers, and you're ready to go. With 16 MB of built-in flash, it holds approximately 15 minutes of compressed stereo audio.
The integrated 2×2W stereo amplifier drives 4–8 ohm speakers directly with only 1% distortion, eliminating the need for an external amp. Stereo line-level output is also broken out for headphone use. The board has 11 trigger inputs and measures 1.9" × 0.85".
Key Features
- Standalone Operation – No microcontroller required; just power, buttons, and speakers
- 2×2W Stereo Class D Amplifier – Drives 4–8 ohm speakers directly with only 1% distortion
- 16 MB Built-in Flash – No SD card needed; approximately 15 minutes of compressed stereo audio
- USB Mass Storage – Drag and drop files via micro USB as if it were a USB drive
- WAV and OGG Vorbis Playback – Up to 44.1 KHz, 16-bit, stereo
- 11 Trigger Inputs – Connect buttons or switches to trigger audio playback
- 5 Trigger Modes – Basic, hold looping, latching loop, play next (sequential), and play random
- Stereo Line Output – Headphone-level output also available
- Compact Size – 1.9" × 0.85" (48 × 22 mm)
- 3–5.5 VDC Power – Works with AAA battery packs or LiPo batteries
Trigger Modes
-
Basic –
Tnn.WAV/Tnn.OGG– Plays once when trigger pin is grounded -
Hold Loop –
TnnHOLDL– Plays and loops while pin is held low -
Latching Loop –
TnnLATCH– Toggle on/off with button press, loops until pressed again -
Play Next –
TnnNEXT0–TnnNEXT9– Plays files sequentially on each press -
Play Random –
TnnRAND0–TnnRAND9– Plays a random file on each press
Also Available
- Audio FX Sound Board 16 MB – Headphone Out Only – Same storage without built-in amplifier
- Audio FX Sound Board 2 MB – Headphone Out – Lower-cost version with 2 MB flash
- Audio FX Mini Sound Board 16 MB – Smaller form factor with 8 triggers
- Audio FX Mini Sound Board 2 MB – Smallest and most affordable option
Ideal For
- Props and costume sound effects with direct speaker output
- Interactive toys and exhibits
- Haunted house and holiday decorations
- Portable audio triggers that need built-in amplification
Package Contents
- 1× Adafruit Audio FX Sound Board (16 MB, 2×2W Amp)
- 1× Header strip
- 2× 2-pin terminal blocks (for speaker connections)
Jargon buster
Plain-language definitions for the technical terms used above.
- LiPo
- A lithium polymer rechargeable battery commonly used in portable electronics projects. It matters because LiPo batteries need correct charging circuitry and care, and this board includes hardware intended for that battery type.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- polyphonic playback
- Polyphonic playback means the board can play more than one sound at the same time. This matters for installations or instruments where sounds may overlap instead of cutting each other off.
- Terminal block
- A connector used to join wires together in a neat, removable, or serviceable way. For this product, it helps split one power input into several outputs without soldering.
- USB mass storage
- USB mass storage is the standard USB device class used by many flash drives and external storage devices. If a board supports it, your project may be able to read and write files on compatible USB storage, provided the software library also supports the device.
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Audio & Video
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Related Tutorials
Free guides on learn.littlebird.com.au
