MAX98357 I2S DAC Decoder with 3W Amplifier

I2S 3W Amplifier Mono
£5.00 GBP
The price is for a single piece.
There are 3 pieces in the retail box.
The quantity has to be a multiple of 3.
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Introducing the Beat Beast, the Lonely Binary I2S Digital Audio Amplifier Module!

Calling all microcontrollers and microcomputers with digital audio capabilities! If you're looking to add amplified sound to your projects, then look no further. The Beat Beast is here to take your audio experience to the next level by combining the power of an I2S DAC and an amplifier into one compact module.

I2S, the digital sound protocol that's not to be confused with I2C, is the secret sauce that allows this module to transform standard I2S digital audio input into clear and amplified analog sound. With just a few pins for data in, data out, bit clock, and left-right channel select, you can unleash the full potential of your audio devices.

Don't let its small size fool you, the Beat Beast packs a punch! This mighty mono amplifier can deliver a surprising 3.2 Watts of power into a 4-ohm impedance speaker. It operates efficiently in the range of 2.7V to 5.5VDC, making it ideal for portable and battery-powered projects. Plus, with built-in thermal and over-current protection, you can trust that it's designed for reliability.

The audio input follows the I2S standard, accepting both 3.3V and 5V logic data. The "Bridge Tied" outputs ensure a direct connection to your speaker without any need for grounding. The output utilizes a ~300KHz square wave PWM that is cleverly averaged out by the speaker coil, eliminating high frequencies that are not audible. Just remember, the output is meant to drive the speakers directly, so connecting it to another amplifier is a no-go.

But wait, there's more! With the Gain pin, you have control over the amplification. By adjusting resistors or wiring it directly, you can set the gain to 3dB, 6dB, 9dB, 12dB, or 15dB. And if you want to fine-tune your audio experience, the ShutDown/Mode pin allows you to put the chip in shutdown or customize the I2S audio channel output. You're in control of the beats!

Compatible with Raspberry Pi, Zero, and any other microcontroller or microcomputer with I2S audio outputs, the Beat Beast is ready to unleash the sound artist within you. Get ready to groove to your favorite tunes and bring your projects to life with the Lonely Binary I2S Digital Audio Amplifier Module. Let the rhythm guide your creativity!


What’s in the Box

There are 3 pieces in the retail box.
The listing price is for

  • 1 x I2S DAC Decoder with 3W Amplifier MAX98357 Module



  • Australia Orders over $55 - Your order will enjoy free shipping via Australia Post Standard Shipping Services. 
  • International Orders over $99 - Your order will be posted via Australia Post Air Mail Services. 

Raspberry Pi board / Micro:bit board / NVIDIA board will be excluded; All PCB orders will not enjoy free shipping. Distributors and wholesale orders are not eligible for free shipping.


At this time, LONELY BINARY is an online-only business, with our products available through This allows us to keep the cost down for the customer. Orders cannot be picked up. 


We ship Australia wide to all addresses, including PO Box, Parcel Locker, etc.All Australian orders will be shipped via Australia Post, Courier Please or Fastway Couriers (Aramex). International Orders will be shipped via Australia Post or DHL. Your order will be shipped within one business day after we receive payment, providing the items are in stock.

  • Standard Shipping
    Sent via standard Australia Post stamped letter mail, typically 5-9 business days. No tracking/support available other than confirmation of dispatch.
  • Express Post
    Sent via Australia Post Express Service, Fastway Courier or Courier Please, 1 – 2 business days for metro orders, potentially longer for orders outside of metro zones, with full tracking.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Shipping costs for international orders vary depending on location and package size, where possible we have kept this to flat rate charges to reduce confusion. International orders are shipped through Australia Post and DHL courier service depending on the most economical at the time. 


Shipping Method via Delivery Area Delivery Time(business day) Tracking No. Weight Limit
DHL Asia 1-2 YES No Limit
western EU 2-3 YES No Limit
eastern EU 3-5 YES No Limit
North America 2-3 YES No Limit
Australia 2-3 YES No Limit
South America 3-5 YES No Limit
South Africa 3-5 YES No Limit


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