Adafruit revised its MAX98357 I2S Class-D Amps guide to add the Stereo I2S 3W Amplifier Breakout — Dual MAX98357A. Existing drivers and examples work the same way; you can now get stereo I2S audio output from Adafruit’s breakout family.
Adafruit added a Stereo I2S 3W Amplifier Breakout (Dual MAX98357A) to the MAX98357 guide.
Drivers and example code already in the guide work with the new dual/stereo board.
The guide covers both mono and stereo MAX98357 Class-D I2S amplifier options for microcontrollers and Raspberry Pi.
# What changed
Adafruit updated its MAX98357 I2S Class-D Amps — Stereo and Mono guide on August 31, 2026. The revision adds information about a new product: the Adafruit Stereo I2S 3W Amplifier Breakout — Dual MAX98357A. The update makes it clear that the same drivers and example sketches that supported mono MAX98357 boards can also be used with the new dual/stereo breakout.
# Why this matters
If you already use the MAX98357 in mono projects, the new Dual MAX98357A board gives you a straightforward migration path to stereo without swapping software stacks. That means projects that need left/right channels, simple music playback, or stereo effects can often be upgraded by swapping hardware while keeping existing I2S audio code.
# How it fits with existing workflows
# Community and support
Adafruit continues to point users to their community channels for help and project sharing. Weekly community events and resources mentioned alongside the guide include:
# Practical next steps for makers
# Bottom line
The main functional change is the addition of a stereo-capable breakout to the MAX98357 family and confirmation that existing software examples will work with it. That reduces friction for makers who want to add stereo audio to existing I2S projects.
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