Description
The PAM8403 XH-A157, a compact yet powerful 2-channel (stereo) 3W amplifier module. Featuring a built-in 3.5mm AUX input jack and a smooth-turn volume control knob, this module delivers clear, efficient sound with ultra-low distortion. Perfect for portable speakers, DIY audio systems, or any low-power audio application.
Key Features:
Dual Channel Output (Stereo): Delivers 3W per channel at 4Ω load with high efficiency.
AUX Input Jack (3.5mm): Plug-and-play support for phones, MP3 players, Raspberry Pi, or Arduino audio projects.
PAM8403 XH-A 157 2X 3W WITH AUX AND KNOB
Onboard Volume Control Knob: Convenient rotary potentiometer to adjust volume easily.High-Efficiency Class-D Amplifier: Up to 90% efficiency, low heat generation, and minimal power loss.Compact PCB Design: Space-saving size, ideal for embedded or portable applications.Overheat and Short Circuit Protection: Ensures reliable and safe performance.
Low Noise & THD: Ensures clear and natural sound output.
Specifications:
Low voltage power supply: 2.5~5.5VDC, USB
Audio input: 3.5mm AUX audio cable Volume Control Knob
Two stereo channels: 3+3W Class: Class-D or Class-AB
5W Output at 10% THD with a 2Ω Load @ 5VDC 3W Output at 10% THD with a 4Ω Load @ 5VDC
Low voltage power supply: 2.5~5.5VDC Speaker impedance: 2/4 Ω
Efficiency up to 90% with Class-D Mode Filterless, low quiescent current and no EMI
Low thd+n at fully output range Superior low noise
No pop at turn-on/off Fully short circuit protection with auto-recovery
Thermal shutdown Supplied with 3 Cables Dimensions: 37 x 22 x 13mm
Applications:
DIY Bluetooth speaker systems
Portable audio projects
Arduino or Raspberry Pi audio
Computer speaker amplifier
Custom sound systems for models or toys









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