I2S Audio Amplifier MAX98357A Shield

3W Amplifier 32-Bit DAC HD Quality
£11.00 GBP

 The Lonely Binary ESP32 I2S Audio Shield is equipped with the MAX98357A DAC IC, which supports a 32-bit resolution to deliver CD-quality audio. This shield features a built-in 3 Watt Class...

Package: Shield

Add to Wishlist

visamasterapple paygoogle paypaypal

Frequently Bought Together

Total price:£27.00

 The Lonely Binary ESP32 I2S Audio Shield is equipped with the MAX98357A DAC IC, which supports a 32-bit resolution to deliver CD-quality audio. This shield features a built-in 3 Watt Class D audio amplifier capable of driving large headphones or external speakers efficiently.

The ESP32 microcontroller interfaces with the MAX98357A using the I²S (Inter-IC Sound) protocol, which requires three specific pins: DOUT, BCLK, and LRC, for accurate audio data transmission:

BCLK (Bit Clock): This clock signal provides a timing reference, dictating the rate at which audio data bits are transmitted. It ensures that each bit of the audio data can be precisely timed and read by the receiver.

LRC (Left/Right Clock): Also known as LRCLK or Word Select, this clock toggles at a frequency lower than the BCLK. It serves to indicate which audio channel (left or right) the data corresponds to, allowing the DAC to differentiate between left and right audio channels effectively.

DOUT (Data OUT): This line transmits the actual audio data bits. The data is synchronized with the BCLK pulses, and the LRC state signals which channel's data is being sent at any given time.
This shield is ideal for any project requiring high-quality audio output, such as DIY audio players, sound-enabled IoT devices, and interactive art installations, where clarity and sound fidelity are crucial.


What’s in the Box

  • 1 x ESP32 I2S Audio Shield
  • *Speaker is not included



  • 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 lonelybinary.com. 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