2pcs PAM8403 Bluetooth Audio Amplifier Module 3W+3W Stereo USB Powered Board for DIY Speakers

2pcs PAM8403 Bluetooth Audio Amplifier Module 3W+3W Stereo USB Powered Board for DIY Speakers Description

PAM8403 3W + 3W Wireless Bluetooth 4.0 Audio Amplifier Module Overview This compact PAM8403 Bluetooth audio receiver and amplifier board provides twochannel stereo output at 3W per channel when powered from a 5V micro USB supply. The ultrasmall PCB and simple wiring make it suitable for DIY speaker projects, audio upgrades, and compact audio systems that require clear, well defined sound. Key benefits Readymade Bluetooth audio input and amplifier in one small board, eliminating the need for separate receiver and amplifier components. Clear, layered sound for small to medium speakers, suitable for 4 ohm to 8 ohm drivers rated 3W each. Easy installation with a micro USB power input and mounting hole for secure placement in enclosures. Low voltage operation at DC 5V allows use with common USB power sources and power banks. Features and specifications Amplifier chip: PAM8403 Bluetooth: Bluetooth 4.0 audio receiver Working voltage: DC 5V (micro USB power supply) Output power: 3W + 3W (stereo) Speaker compatibility: two speakers, 3W each, impedance 4 to 8 ohm Mounting hole diameter: 3.0 mm Size: ultrasmall PCB for compact installations Sound character: clear output with good separation between channels Package contents 2 x PAM8403 3W + 3W Wireless Bluetooth Module 1 x Micro USB power supply (working voltage DC 5V) Compatibility and installation Designed for use with passive speakers rated 3W each and 4 to 8 ohm impedance. Power from any standard 5V USB source. Ensure stable 5V supply for performance. Mount using the 3.0 mm holes and secure wiring to left and right speaker outputs. No special drivers required. Pair with Bluetooth 4.0 capable phones, tablets, or computers. Practical use scenarios DIY bookshelf or desktop Bluetooth speakers: Turn spare speaker drivers into a wireless stereo set with minimal wiring and space. Portable audio projects: Combine with a small enclosure and a USB power bank to build a compact portable speaker. Embedded audio for small devices: Use in hobby electronics, Raspberry Pi, or microcontroller projects that need Bluetooth audio playback. Notes and recommendations Match speaker power and impedance to the module specification for reliable performance. Avoid prolonged operation at maximum volume to prevent overheating or speaker damage. Ensure secure mounting and proper wiring to maintain stable audio output. This module provides a compact, easytoinstall solution for adding Bluetooth audio reception and lowpower stereo amplification to small speaker systems.