The Adafruit Audio FX Sound Board is a standalone audio trigger that plays WAV and OGG Vorbis files — no Arduino or programming required. Simply drag and drop sound files over USB, wire up buttons to the trigger pins, and you're ready to go. With 2 MB of built-in flash storage, it holds a few minutes of compressed stereo audio or about 30 seconds of uncompressed stereo.

This headphone-out version features stereo line-level output for headphones, powered speakers, or an external amplifier. It has 11 trigger inputs (compared to 8 on the Mini version) and measures 1.9" × 0.85". Runs from 3–5.5 VDC — perfect for battery-powered props and costumes.

Key Features

• Standalone Operation – No microcontroller required; just power and buttons
• 2 MB Built-in Flash – No SD card needed; a few 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 – AC-coupled headphone/line-level output
• 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 – Eight times the storage for longer audio projects
• Audio FX Sound Board 16 MB with 2×2W Amp – More storage plus built-in stereo amplifier
• 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
• Interactive toys and exhibits
• Haunted house and holiday decorations
• Portable audio triggers for performances

Package Contents

• 1× Adafruit Audio FX Sound Board (2 MB, headphone out)
• 1× Header strip