Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A
We have ✅ 5 available of the AF-3006 in our Sydney warehouse.
The Adafruit MAX98357A I2S Class D Amplifier Breakout is an all-in-one digital audio solution that decodes I2S audio and amplifies it directly to a speaker — no separate DAC required. Delivering up to 3.2W into a 4Ω speaker, it's a compact and efficient way to add amplified sound to your Raspberry Pi, Arduino Zero, or any microcontroller with I2S output.
The Class D amplifier design is highly efficient, running from 2.7V to 5.5V DC — perfect for portable and battery-powered projects. It accepts 3.3V or 5V logic I2S input and supports sample rates from 8 kHz to 96 kHz with no MCLK required.
Key Features
- 3.2W Output Power – Drives 4Ω speakers at up to 3.2W (5V supply, 10% THD) or 1.8W into 8Ω
- I2S Digital Audio Input – Accepts standard I2S with 3.3V or 5V logic, no separate DAC needed
- Class D Efficiency – Highly efficient amplifier ideal for battery-powered projects
- Adjustable Gain – Five pin-selectable gain levels: 3 dB, 6 dB, 9 dB (default), 12 dB, and 15 dB
- Mono Channel Selection – Outputs stereo mix (L+R)/2 by default; configurable for left-only or right-only
- Wide Sample Rate Support – 8 kHz to 96 kHz, no MCLK required
- Built-in Protection – Thermal shutdown and over-current protection
- Click & Pop Suppression – Clean audio transitions with minimal artefacts
- 77 dB PSRR – Excellent power supply rejection at 1 kHz
Ideal For
- Raspberry Pi audio projects and media players
- Portable and battery-powered sound systems
- Arduino Zero and other I2S-capable microcontroller projects
- Compact amplified audio where space is limited
Package Contents
- 1× Adafruit MAX98357A I2S Amplifier Breakout (assembled and tested)
- 1× 0.1" Header Strip
- 1× 3.5 mm Terminal Block
Resources
The Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A appears in the following collections:
