PAM8403 Mini Amplifier Board 5W+5W Dual Channel TYPE-C

Upgrade your DIY audio projects with the XH-A155 Mini PAM8403 Class D Digital Power Amplifier Board — a compact, high-efficiency dual-channel module delivering crystal-clear stereo sound in a remarkably small footprint. At just 40×30mm, this little board punches well above its size, making it the ideal choice for custom speaker builds, portable audio systems, and electronics projects.

Key Features

• Dual-Channel 5W+5W Output: Delivers a combined 10W of clean audio power across two channels, perfectly suited for 4–8Ω speakers.
• TYPE-C Power Input: Conveniently powered via a modern USB TYPE-C port — compatible with portable power banks, standard wall chargers, and fast-charging adapters.
• Class D Efficiency: The PAM8403 Class D amplifier topology maximizes power efficiency, minimizing heat generation and extending battery life in portable applications.
• Bluetooth-Compatible Design: Supports wireless Bluetooth audio input, enabling a truly cable-free listening experience when paired with the appropriate BT module.
• DC 5V Power Supply: Operates on a standard 5V DC input, making it universally compatible with USB power sources you already own.
• Ultra-Compact Form Factor: The 40×30mm board slips easily into tight enclosures and custom builds without compromising on performance.
• Ready to Use: Arrives as a fully assembled module — simply connect your power source and speakers to get started.

Specifications

• Model: XH-A155
• Chip: PAM8403
• Amplifier Class: Class D Digital
• Output Power: 5W + 5W (Stereo)
• Speaker Impedance: 4–8Ω
• Power Input: DC 5V via TYPE-C
• Channels: 2 (Stereo / Dual Channel)
• Board Dimensions: 40 × 30mm
• Type: Module
• Condition: New

Who Is This For?

Whether you're a hobbyist building a custom Bluetooth speaker, an electronics enthusiast prototyping an audio device, or a maker upgrading an existing project, the XH-A155 PAM8403 amplifier board delivers professional-grade audio performance in a budget-friendly, plug-and-play package. It also makes a great gift for electronics hobbyists and DIY audio fans.

Learn More About Audio Electronics

For technical standards and guidance on electronics and audio components, visit the National Institute of Standards and Technology (NIST), a trusted resource for engineering and electronics standards.

Frequently Asked Questions

Q: What is the XH-A155 Mini PAM8403 Amplifier Board and what does it do?

A: The XH-A155 is a compact Class D digital stereo amplifier module built around the PAM8403 chip. It delivers 5W per channel (10W total) across two audio channels, making it ideal for driving 4–8Ω speakers in DIY audio builds, custom speaker enclosures, and portable audio projects. It is powered via a TYPE-C USB port at DC 5V.

Q: What power sources are compatible with this amplifier board?

A: The board uses a standard TYPE-C connector and operates on DC 5V, making it compatible with a wide range of power sources including USB wall chargers, portable power banks, and fast-charging adapters — essentially any USB TYPE-C power supply that outputs 5V.

Q: Is this amplifier board compatible with Bluetooth audio?

A: Yes — the XH-A155 supports Bluetooth-compatible audio input when paired with an appropriate Bluetooth receiver module. This enables wireless audio streaming directly to your custom speaker build without the need for wired connections.

Q: What speaker sizes and impedances work with this board?

A: This amplifier board is designed for speakers with an impedance of 4–8Ω. It works well with a wide variety of speaker drivers, making it a versatile choice for both compact and mid-sized speaker projects.

Q: How compact is the XH-A155 PAM8403 amplifier board?

A: The board measures just 40×30mm, making it one of the most compact stereo amplifier modules available. Its small size allows it to fit inside tight speaker enclosures, portable devices, and custom electronics projects with ease.