Hover to zoom
1 / 4 · Click to enlarge
Adafruit
Adafruit MAX98357A I2S 3W Class D Amplifier Breakout Board
5.01 rating447+ bought in past month
AI Summary
Audio Amplifier Module for everyday usersThe Adafruit MAX98357A I2S 3W Class D Amplifier Breakout Board by Adafruit is a value-for-money audio amplifier module designed for everyday users. It features Output Power (W): 3 and PSRR/Ripple Rejection: 77 dB typ @ 1KHz.
₹1,230
Free Shipping💵 COD Available
Available Offers
Free Delivery on this order. No minimum order value.
15-Day Easy Returns — hassle-free return & full refund.
Secure Payment — 100% safe checkout with UPI, Cards & Net Banking.
Total: ₹1,230
Buying tip: A well-rounded choice at a fair price. Recommended for most buyers.
Estimated delivery: 17 Aug – 31 Aug
Free Shipping
Pan India delivery
15-Day Returns
Hassle-free policy
Secure Payment
Razorpay protected
Quality Assured
Vetted products only
Available Offers
💳
5% Cashback
Pay with UPI & get 5% cashback (up to ₹50) via Razorpay
🏦
No-Cost EMI
Available on select bank cards at checkout. 0% interest for 3 months.
📦
Free Shipping
Free delivery on all orders. No minimum order value.
💵
Cash on Delivery
COD available on orders up to ₹5,000 across India.
Quick Specs
Output Power (W): 3
PSRR/Ripple Rejection: 77 dB typ @ 1KHz
Gain: Five pin-selectable 3dB, 6dB, 9dB, 12dB, 15dB
Sampling Rate: I2S 8kHz to 96kHz
Dimensions (L x W x H) mm: 19.4 x 17.8 x 3.0
Weight (g): 1.2
Ideal For
Electronics projectsArduino / Raspberry Pi buildsPrototyping
SKU: robu-1288043Category: Audio Amplifier Module
About This Product
The Adafruit MAX98357A I2S 3W Class D Amplifier Breakout Board by Adafruit is a value-for-money audio amplifier module designed for everyday users. It delivers reliable performance at an accessible price.
Key Specifications
- Output Power (W): 3
- PSRR/Ripple Rejection: 77 dB typ @ 1KHz — smooth, flicker-free operation
- Gain: Five pin-selectable 3dB, 6dB, 9dB, 12dB, 15dB
- Sampling Rate: I2S 8kHz to 96kHz — smooth, flicker-free operation
- Dimensions (L x W x H) mm: 19.4 x 17.8 x 3.0
- Weight (g): 1.2
- Shipping Weight: 0.01 kg
- Shipping Dimensions: 4 × 4 × 1 cm
Why Buy from Pricio?
Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.
This is a Adafruit MAX98357A I2S 3W Class D Amplifier Breakout Board.
Listen to this good news - we now have an all-in-one digital audio amp breakout board that works incredibly well with the Raspberry Pi! If you're looking for an easy and low-cost way to get your digital sound files bumpin' then the MAX98357 I2S Amp Breakout is for you. It takes standard I2S digital audio input and, not only decodes it into analog but also amplifies it directly into a speaker. Perfect for adding compact amplified sound, it takes 2 breakouts (I2S DAC + Amp) and combines them into one.
I2S (not to be confused with I2C) is a digital sound protocol that is used on circuit boards to pass audio data around. Many high-end chips and processors manage all of the audio in digital I2S format. Then, to input or output data, three or four pins are used (data in, data out, bit clock, and left-right channel select). Usually, for audio devices, there's a DAC chip that will take I2S in and convert it to analog that can drive a headphone.
This small mono amplifier is surprisingly powerful - able to deliver 3.2 Watts of power into a 4-ohm impedance speaker (5V power @ 10% THD). Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, it's incredibly efficient - making it perfect for portable and battery-powered projects. It has built-in thermal and over-current protection but we could barely tell it got hot.
The audio input is I2S standard, you can use 3.3V or 5V logic data. The outputs are "Bridge Tied" - which means they connect directly to the outputs, no connection to the ground. The output is a ~300KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output to another amplifier, it should drive the speakers directly.
There's a Gain pin that can be manipulated to change the gain. By default, the amp will give you 9dB of gain. By connecting a pullup or pull-down resistor, or wiring directly, the Gain pin can be set up to give 3dB, 6dB, 9dB, 12dB, or 15dB.
The ShutDown/Mode pin can be used to put the chip in shutdown or set up which I2S audio channel is piped to the speaker. By default, the amp will output (L+R)/2 stereo mix into mono out. By adding a resistor, you can change it to be just left or just right output
Works great with Raspberry Pi, Arduino Zero, and any other microcontroller or microcomputer with I2S audio outputs
Features:
Features:
- Output Power: 3.2W at 4Ω, 10% THD, 1.8W at 8Ω, 10% THD, with 5V supply
- PSRR: 77 dB typ @ 1KHz
- I2S sample rates from 8kHz to 96kHz
- No MCLK required
- Click + Pop reduction
- Five pin-selectable gains: 3dB, 6dB, 9dB, 12dB, 15dB
- Excellent click-and-pop suppression
- Thermal shutdown protection
- Dimensions (L x W x H) mm: 19.4 x 17.8 x 3.0
- Product Weight: 1.2g
Useful Links:
- User Manual for Adafruit MAX98357A I2S 3W Class D Amplifier Breakout Board
- GitHub with EagleCAD PCB Files
- Fritzing object in the Adafruit Fritzing library
Package Includes:
1 x Adafruit MAX98357A I2S 3W Class D Amplifier Breakout BoardSetup Guide
1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.
