PAM8403 Bluetooth 5.0 Audio Amplifier Board Module with Potentiometer
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৳ 160.00৳ 200.00 (-20%)
This is a compact XH-A158 PAM8403 Bluetooth 5.0 digital audio amplifier board module designed for DIY portable speakers and custom audio setups [Image Context]. It utilizes a high-efficiency Class D PAM8403 amplifier chip to deliver 5W + 5W dual-channel stereo output into 4Ω or 8Ω speakers. Complete with an integrated volume potentiometer switch, onboard track control buttons, three 2-pin pigtail wire looms, and panel-mounting hardware, this mini board provides clean sound amplification directly from any Bluetooth-paired device.
Product Overview
The XH-A158 PAM8403 Bluetooth 5.0 Digital Stereo Audio Amplifier Board is an ultra-compact, high-efficiency Class D wireless audio module designed for custom speaker builds and low-power portable sound setups. Centered around the industry-standard PAM8403 mini power amplifier chip, this pocket-sized PCB combines dual-channel audio amplification with a high-speed Bluetooth 5.0 wireless receiver. It delivers clear audio fidelity directly from smart devices without requiring external pre-amplifiers or extensive signal wiring profiles. [1, 2, 3]
Design & Hardware Architecture
Engineered to simplify wireless hardware design while conserving operational energy layout:
- High-Efficiency Class D Topology: The PAM8403 core translates more than 90% of its input energy directly into acoustic output power. This minimizes waste heat generation, allowing the device to perform flawlessly over long intervals without needing a heavy metal cooling heat-sink. [1, 3, 4, 5]
- Integrated Volume Potentiometer Switch: Outfitted with a premium mechanical dial assembly that acts as both a power toggle switch and a fluid rotary volume controller. Turning the included black adjustment knob clockwise powers the module on and smoothly increases audio gains. [6]
- On-Board Media Control Switches: Features dedicated, low-profile tactical hardware buttons mounted along the edge. These triggers allow you to command connected devices wirelessly—short-pressing to skip tracks (Next/Prev) or adjust software volume parameters directly from the board. [6]
- Modular Plug-and-Play Connectors: Designed with polarized, pre-wired quick-disconnect terminal socket headers. The package provides three 2-pin pigtail wire looms to isolate left speaker output, right speaker output, and primary direct-current (DC) power traces cleanly.
Technical Specifications
| Performance Feature | Verified Specification Value |
|---|---|
| Model Code Identity | XH-A158 Micro Audio Platform |
| Amplifier Chip Core | Single-Chip PAM8403 Class D Driver Architecture |
| Wireless Protocol | Bluetooth 5.0 Wireless Audio Node |
| Operating Input Potential | DC 5.0 Volts (5V) Nominal Operating Floor |
| Audio Channel Layout | Dual-Channel Stereo Sound Output |
| Maximum Power Dissipation | 5W + 5W (10 Watts Total) into a 4Ω load |
| Recommended Speaker Fit | Optimized for 4Ω to 8Ω micro loudspeaker drivers |
| Physical PCB Footprint | Approximately 45 mm × 42 mm × 25 mm |
Common System Deployments
- DIY Portable Bluetooth Speakers: Constructing pocket-sized, battery-powered sound docks using salvaged laptop speakers, lightweight wood casing veneers, or custom 3D-printed chassis shells.
- Legacy Stereo Upgrades: Retrofitting vintage tabletop radios, old intercom panels, or passive desktop computer speakers with seamless modern wireless pairing.
- Microcontroller Voice Synthesis: Serving as a low-noise external speaker amplifier box for conversational voice outputs or alert sound banks triggered by Arduino, ESP32, or Raspberry Pi development setups. [2, 7, 8]
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