MAX4466 AGC Sound Sensor Module – DIY Microphone Amplifier

MAX4466 AGC Amplifier Board – Plug & Play Sound Sensor Module

Take your DIY electronics projects to the next level with the MAX4466 Auto Gain Control (AGC) Sound Sensor Module. Featuring a high-quality electret condenser microphone and the renowned MAX4466 low-power amplifier chip, this compact module delivers clean, stable audio signals for voice-triggered lamps, sound-activated switches, music visualizers, IoT voice interaction devices, and more. Made in Mainland China.

Key Advantages

• Professional Audio Capture: Built around a permanent electret condenser diaphragm, this module picks up the full 20 Hz–20 kHz audible range. It precisely converts sound pressure into steady electrical signals, ensuring low-distortion audio output for all downstream signal processing workflows.
• Tunable Gain Amplification: The MAX4466 op-amp chip supports a 25× to 125× adjustable gain range with rail-to-rail output. Freely dial in the gain to suit line-level audio input or microcontroller ADC sampling — no signal clipping worries.
• Excellent Interference Resistance: A gold-plated PCB integrated with ferrite noise suppression components delivers a 112 dB power rejection ratio and 126 dB common mode rejection ratio. Power supply ripples and ambient interference are effectively eliminated for trustworthy output even in demanding environments.
• Universal Compatibility: Standard 3-pin (VCC, GND, OUT) header with 2.4 V–5.5 V wide voltage input works directly with all 3.3 V and 5 V development boards (Arduino, Raspberry Pi, ESP32, and more) — no extra peripheral circuits required.
• Ultra-Low Power Draw: Micro-power circuit design consumes just 24 µA static current, making it ideal for battery-operated portable projects and long-running audio monitoring or voice interaction applications.

Product Specifications

Common Use Cases

• Voice recognition & sound-activated systems
• DIY voice-controlled lamps & switches
• Decibel level monitoring devices
• Audio recording & ADC sampling projects
• Music visualizer & LED audio reactive displays
• IoT voice interaction & smart home prototypes

What's in the Box

• 1 × MAX4466 AGC Sound Sensor Module
• 1 × Set of 3-Pin Header Pins

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Frequently Asked Questions

Q: Is the MAX4466 Sound Sensor Module compatible with Arduino and Raspberry Pi?

A: Yes. The module's standard 3-pin header (VCC, GND, OUT) and wide 2.4 V–5.5 V input voltage make it directly compatible with Arduino, Raspberry Pi, ESP32, STM32, and virtually any 3.3 V or 5 V development board — no extra circuitry required.

Q: How do I adjust the gain on the MAX4466 amplifier board?

A: The MAX4466 chip supports a 25× to 125× adjustable gain range. A small trim potentiometer on the board allows you to fine-tune the gain to match your microphone sensitivity and your project's signal requirements, preventing clipping at the ADC input.

Q: Can this module be used in battery-powered projects?

A: Absolutely. With only 24 µA of static current draw, the MAX4466 AGC Sound Sensor Module is specifically well-suited for battery-operated portable devices, long-running audio monitors, and low-power IoT voice interaction applications.

Q: What is the frequency range this microphone module can detect?

A: The built-in electret condenser microphone captures the full 20 Hz to 20 kHz audible spectrum, making it suitable for voice commands, music visualization, ambient sound monitoring, and general-purpose audio sampling applications.

Production & Packaging Notice

To 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.