{"product_id":"max98357-i2s-class-d-audio-amplifier-module-esp32","title":"MAX98357 I2S Class D Audio Amplifier Module – ESP32 Compatible","description":"\n\u003ch2\u003eMAX98357 I2S Class D Audio Amplifier Module\u003c\/h2\u003e\n\u003cp\u003eBring crystal-clear digital audio to your next electronics project with the \u003cstrong\u003eMAX98357 I2S Class D Audio Amplifier Module\u003c\/strong\u003e. Designed for makers, hobbyists, and engineers alike, this compact unfiltered Class D amplifier delivers efficient, high-quality audio output through a simple I2S digital interface — no analog input stage required. Fully compatible with \u003cstrong\u003eESP32, ESP8266, Raspberry Pi\u003c\/strong\u003e, and other popular microcontroller platforms, it's the ideal building block for smart speakers, IoT audio devices, and DIY audio projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMAX98357 Chip:\u003c\/strong\u003e Industry-proven, high-efficiency unfiltered Class D amplifier IC for clean digital audio output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eI2S Digital Interface:\u003c\/strong\u003e Direct digital audio input — no DAC required, minimizing signal noise and component count\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eESP32 \u0026amp; Microcontroller Compatible:\u003c\/strong\u003e Works seamlessly with ESP32, ESP8266, Raspberry Pi, Arduino (with I2S support), and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnfiltered Class D Output:\u003c\/strong\u003e Up to \u003cstrong\u003e3.2W\u003c\/strong\u003e output power into an 8Ω speaker — perfect for portable and embedded audio applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Supply Voltage:\u003c\/strong\u003e Operates on 2.5V to 5.5V, making it versatile for battery-powered and USB-powered projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB module for easy integration into tight enclosures and prototyping boards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShutdown \u0026amp; Gain Control:\u003c\/strong\u003e Built-in SD pin for enable\/mute and gain configuration for flexible audio level management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Quiescent Current:\u003c\/strong\u003e Efficient standby power consumption, ideal for always-on IoT audio applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIC:\u003c\/strong\u003e Maxim MAX98357A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e I2S (BCLK, LRC, DIN)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Power:\u003c\/strong\u003e 3.2W into 8Ω @ 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 2.5V – 5.5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e 0.015% (typical)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudio Format:\u003c\/strong\u003e 16\/32-bit, up to 96kHz sample rate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGain Options:\u003c\/strong\u003e 3dB, 6dB, 9dB, 12dB, 15dB (configurable via SD pin)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× MAX98357 I2S Class D Audio Amplifier Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eESP32 \/ ESP8266 smart speaker projects\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi audio output expansion\u003c\/li\u003e\n  \u003cli\u003eDIY Bluetooth and Wi-Fi audio streaming devices\u003c\/li\u003e\n  \u003cli\u003eIoT voice assistant hardware (e.g. custom Alexa\/Google Home builds)\u003c\/li\u003e\n  \u003cli\u003eEmbedded audio playback systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cp\u003ePair this module with other great components from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/glow-in-the-dark-natural-stone-round-beads-diy-jewelry-making\"\u003eGlow in the Dark Natural Stone Round Beads | DIY Jewelry Making\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the MAX98357 I2S Class D Audio Amplifier Module and what does it do?\u003c\/h4\u003e\n\u003cp\u003eA: The MAX98357 is a compact unfiltered Class D audio amplifier module that accepts a digital I2S audio signal and converts it directly into speaker-driving power output — up to 3.2W into an 8Ω load. It eliminates the need for a separate DAC, making it a streamlined, low-noise solution for digital audio in embedded and maker projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the MAX98357 module compatible with ESP32 and other microcontrollers?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The MAX98357 module is fully compatible with the ESP32, ESP8266, Raspberry Pi, and any microcontroller platform that supports I2S digital audio output. Simply connect the BCLK, LRC, and DIN pins to the corresponding I2S pins on your microcontroller and you're ready to start streaming audio.\u003c\/p\u003e\n\u003ch4\u003eQ: What speaker can I use with the MAX98357 amplifier module?\u003c\/h4\u003e\n\u003cp\u003eA: The MAX98357 is optimized for 4Ω to 8Ω speakers. At 5V supply, it can deliver approximately 3.2W into an 8Ω speaker. It's best suited for small to medium-sized speakers used in portable devices, enclosures, and DIY audio builds.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the MAX98357 module require any external components to function?\u003c\/h4\u003e\n\u003cp\u003eA: Minimal external components are needed. The module PCB includes the necessary decoupling capacitors and resistors. You simply need to provide a power supply (2.5V–5.5V), connect your I2S audio source, and attach a compatible speaker. No output filter capacitors are required for most applications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the MAX98357 I2S Class D Audio Amplifier Module and what does it do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The MAX98357 is a compact unfiltered Class D audio amplifier module that accepts a digital I2S audio signal and converts it directly into speaker-driving power output — up to 3.2W into an 8Ω load. 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