6Pcs MAX98357 I2S 3W Class D Amplifier Breakout Board, MAX98357A Interface I2S DAC Decoder Module Filterless Audio Decoder for Raspberry Pi, for ESP32, for Arduino Zero

I2S Class-D Amplifier Module (MAX98357) — 6-Pack (Concise English Description)Compact, plug-and-play I2S Class-D amplifier modules based on the MAX98357. Accepts standard I2S digital audio (DIN / BCLK / LRC) and directly drives a speaker—no separate DAC or amplifier required. Ideal for Raspberry Pi, ESP32, Arduino (with I2S), portable projects and small smart speakers.Key FeaturesChip: MAX98357 (I2S Class-D)Supply: DC 2.5–5.5V (recommended 5V)Output power (5V, 10% THD): ≈ 3.2 W @ 4Ω, 1.8 W @ 8ΩFormats: I2S / 12S / LJ / TDM; sample rates 8–96 kHzNo external MCLK required; built-in click/pop suppressionSelectable gains: 3 / 6 / 9 / 12 / 15 dB via GAIN pinDefault output: L+R mono mix; SD/MODE selects shutdown or left/right channelBridge-Tied (BTL) outputs — drives speakers directly; integrated thermal & over-current protectionPSRR: ~77 dB (1 kHz). Weight: ~5 g per board.Pinout (quick)VCC — power in (2.5–5.5V)GND — groundDIN — I2S data inBCLK — bit clockLRC — left/right (LRCLK) or TDM syncSD / MODE — shutdown / channel select (pull LOW = shutdown)GAIN — set gain with pull-up / pull-down or direct wiringUsage & PrecautionsOutputs are PWM BTL — connect only to a speaker. Do not tie outputs to ground or feed into another amplifier input.Ensure ventilation; high continuous power increases temperature. Add heatsinking if needed.Use a stable power supply to avoid noise or triggering protection. Wire with power off; test first at low gain.Recommended for small speakers (4–8Ω). Avoid long continuous periods at maximum power.Package Contents6 × MAX98357 I2S Class-D amplifier modules1 × Male-to-Female Dupont jumper wire1 × Female-to-Female Dupont jumper wire

• Package & uses: 6-pack modules plus 1 male-to-female and 1 female-to-female Dupont jumper. Ideal for ideal for DIY speakers, digital assistants, portable audio, robotics, classroom electronics, prototypes and multi-channel deployments. Recommended for programming and rapid prototyping with compatible with modern development tools.
• Note: Outputs are bridge-tied PWM (~300 kHz) and are designed to drive speakers directly — not intended to be tied the outputs to ground or feed them into another amplifier. Recommended speaker impedance: 4–8 Ω. Output power (5 V, 10% THD): ≈3.2 W at 4 Ω, ≈1.8 W at 8 Ω. For sustained high-power use ensure good ventilation or add a heatsink, and use a stable power supply to minimize noise.
• Formats & gain: Supports I2S/12S/LJ/TDM with sample rates 8–96 kHz and no external MCLK; gain selectable via the GAIN pin (3 / 6 / 9 / 12 / 15 dB, default 9 dB) and SD/MODE selects shutdown or left/right (default L+R mono mix). Compact yet powerful—achieves AB-class like audio performance at Class-D efficiency, delivering up to ≈3.2 W of clear and detailed audio output for a wide range of applications.
• Plug and Play: Compact WLP design reduces parts and PCB size; digital input improves noise immunity and ~8 dB jitter tolerance with improved jitter tolerance (~8 dB); built-in EMI suppression supports longer speaker runs without extra filtering — high-quality sound with minimal components and efficient Class-D performance.
• DIY & Maker Friendly: Ideal for hobbyists, students, and developers creating custom audio projects. Works seamlessly with Arduino, Raspberry Pi, ESP32 and other MCUs. Perfect for portable speakers, 3D-printed enclosures, and wearable devices. Includes Dupont cables for easy, solder-free prototyping. Compact design with digital input delivers reliable Class-D performance for DIY audio and learning projects.