PAM8406 2x5W Class D Mini Audio Amplifier Board | Dual Channel Stereo
PAM8406 2x5W Class D Mini Audio Amplifier Board | Dual Channel Stereo
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Short Product Description
Short Product Description
Upgrade your DIY audio projects with the ultra-compact PAM8406 Mini Digital Amplifier Board. Delivering a powerful 5W+5W dual-channel stereo output from just a 5V USB power supply, this Class D module guarantees superior noise suppression and crystal-clear sound. Perfectly sized for tight electronic enclosures, it is the reliable choice for makers, STEM students, and electronic hobbyists looking to build high-quality portable speakers without the bulk.
Key Features
Key Features
- Ultra-Compact Footprint: Measuring just 23mm x 24mm, it easily integrates into tiny enclosures and portable devices.
- Total Noise Suppression: Advanced internal circuitry blocks unwanted static, delivering a pristine listening experience even when idle.
- Efficient 5W+5W Output: Drives small 4Ω and 8Ω speakers with high efficiency, creating surprisingly loud and clear stereo sound.
- USB Power Compatible: Operates smoothly on a 2.5V-5V range, allowing for convenient direct-from-USB or battery-bank power solutions.
- Built-in Volume Control: Integrated onboard potentiometers allow for precise, independent tuning of both left and right channels.
- Machine-Soldered Double-Sided Board: Prevents channel crosstalk and ensures reliable, long-term performance under continuous use.
Full Product Description
Full Product Description
Build Crystal-Clear Audio Projects Without the Bulk
Finding a high-performance audio amplifier that fits into a compact 3D-printed enclosure or miniature electronic device can be a challenge. Bulky components often come with frustrating background noise and complicated power requirements. The PAM8406 Class D Mini Amplifier Board solves this by delivering robust, interference-free sound in a footprint smaller than a postage stamp.
Backed by our decades of experience supplying reliable electronic components, we recommend this board for anyone looking to achieve professional-grade audio in a DIY setting.
Zero Background Noise, Pure Sound Quality
Nothing ruins a custom speaker build faster than a constant static hiss. This amplifier module features exceptional built-in noise suppression. Even without an active audio input, you can place your ear directly against the speaker and hear absolute silence. When the music starts, the unique Class D digital architecture delivers rich, powerful audio without the need for an external LC filter.
Designed for True Flexibility and Efficiency
Whether you are building a custom desktop speaker, repairing legacy electronics, or designing a STEM prototype, this board adapts to your needs. It drives both 4Ω and 8Ω speakers with ease and runs effortlessly on a standard 2.5V to 5V power supply—meaning you can power your entire audio project using a simple computer USB port or a standard power bank.
Premium Build for Long-Lasting Performance
Machine-soldered for precision, this board outperforms hand-soldered alternatives in both durability and thermal efficiency. The double-sided wiring layout actively prevents ground potential imbalances and channel crosstalk, ensuring your stereo sound remains perfectly separated and distortion-free.
⚠️ CRITICAL WARNING: To prevent permanent damage to the IC, the "negative" terminals of the left and right channel outputs MUST NOT be connected together. Always connect your speakers (the load) BEFORE applying power.
Technical Specifications
Technical Specifications
- Chip model: PAM8406
- Amplifier class: Class D
- Operating voltage: 2.5V – 5V DC
- Maximum voltage limit: 5.5V
- Power output: 5W + 5W (dual-channel stereo)
- Speaker impedance: 4Ω or 8Ω
- Dimensions: 23mm x 24mm
- Volume control: Dual onboard potentiometers
- Filtering: Filterless design (no LC filter required)
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q: Can I power this amplifier board using a standard 9V battery?
A: No. The maximum limit for the PAM8406 chip is 5.5V. Exceeding this voltage will permanently damage the board. We highly recommend using a standard 5V USB power supply, a single lithium cell (3.7V), or 3x AA batteries.
Q: Why does the warning say to connect speakers before turning on the power?
A: Class D amplifiers switch at very high frequencies. Powering the board without a load (speakers) connected can cause voltage spikes that may instantly fry the amplifier IC. Always wire your speakers first.
Q: Can I wire the negative speaker outputs together to make a mono speaker?
A: Absolutely not. The left and right negative outputs are independent. Bridging them together will short-circuit the board and destroy the PAM8406 chip.
Target Users / Applications
Target Users / Applications
- DIY Audio Hobbyists: Building custom portable Bluetooth speakers or desktop sound systems.
- STEM Educators & Students: Creating interactive electronic school projects requiring audio feedback.
- Arcade/Retro Gaming Modders: Upgrading the sound output in custom Raspberry Pi arcade cabinets or handheld consoles.
- Electronic Repair Technicians: Replacing dead audio stages in small consumer electronics.
