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PAM8303 mini audio amplifier module with a knob
PAM8303 mini 3W mono Class-D audio amplifier module with onboard volume control knob, high efficiency, and low-voltage operation.
The PAM8303 Mini Audio Amplifier Module with Knob is a compact and efficient Class-D mono audio amplifier designed to deliver clear sound output in small and portable projects. Based on the PAM8303 IC, this module provides up to 3W output power while maintaining high efficiency and low heat dissipation.
It features an onboard volume control knob, allowing easy manual adjustment of audio level without additional circuitry. The module operates on a 2.5V to 5.5V power supply, making it compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and other low-voltage systems. Its filterless design simplifies wiring and reduces component count.
This amplifier module is ideal for portable speakers, voice announcement systems, IoT devices, toys, alarms, and DIY audio projects where compact size and ease of use are essential.

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- Independent development MCU platform
- High cost performance
- Support UART / GPIO data communication interface
- Support STA / AP / STA + AP coexistence mode of operation
- Support SmartLink intelligent networking (APP)
- Support wireless upgrade firmware
- Support WPS network configuration
- Built-in onboard antenna &Temperature and humidity sensor
- RGB three-color light adjustable
- Provide rich AT command set configuration
- Free AiCloud cloud service for debugging
- 3 AA batteries / 5V adapter power supply
- Size: 61.6mm x 56.2mm;
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-  Single row 0.1″ header for easy connection to a host system
- Power requirements: +5 VDC
- 30 mA idle
- 46-220 mA active (depending on speech parameters and output load)
- Â Communication: Asynchronous 9600 bps serial (8N1)
- Dimensions: 1.25″x1.5″x0.37″
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 Interface operation is simpler
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5V single power supply.
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Output directly connected to the speaker, can drive 4 ohms 3W / 8 ohm 2W speakers
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Busy status output, can be connected to the microcontroller IO or indicator light, no need to be left floating.
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 Voice effect optimization
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 Module miniaturization and easy integration
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Dimension: 33*27.5mm
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With mounting holes

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