WONDOM AA-AB32167 Class D Amplifier Module TPA3123 2x19W 4 Ohm

The WONDOM AA-AB32167 is a Class D stereo amplifier module based on the Texas Instruments TPA3123 chip, designed for DIY audio projects, active speakers, multimedia systems, and OEM integrations. Powered by a DC supply voltage ranging from 10V to 30V DC, it delivers up to 2x19W into 4Ω at 1% THD+N and can reach 2x25W into 4Ω at 10% THD+N with a 27V power supply. Thanks to its Class D architecture, it offers high efficiency ranging from 90% to 95%, reducing power consumption and heat generation. The module features analog stereo audio inputs, a 22kΩ input impedance, 635mV RMS input sensitivity, and a frequency response from 20Hz to 20kHz. It also integrates a power LED, overcurrent and overtemperature protection circuits, as well as optimized thermal dissipation through the PCB's large copper areas. Compact, with dimensions of 91 x 69 x 16.5mm (3.60" x 2.70" x 0.65") and a weight of approximately 167g, it can be easily installed thanks to its four mounting holes. The AA-AB32167 therefore represents a high-performance, reliable, and cost-effective stereo amplification solution for a wide range of audio applications requiring moderate output power and excellent energy efficiency.