Guangzhou DSPPA Audio Co., Ltd.
Tel: 020-28346138
Fax: 020-81305947

DA3750 1 channel Class-D Amplifier


● Highly efficient switching power supply.
● Highly efficient CLASS D amplifier.
● 100V, 70V constant voltage output (common output end), support 100V/70V output real-time switching.
● With perfect and reliable DC output protection, short circuit protection and overheating protection, which improves the safety performance of the machine.
● 5 unit LED indicator for status display.
● 6.35mm socket and XLR socket can easily realize looping connection.
● Output short circuit protection and can recover automatically.
● A series of high power amplifiers are available.

  • Introduction
  • Specification

DA3750 is one of the series of digital power amplifier with newly designed appearance and high powers for selection. The machine is nice and neat, and is suitable for factories, schools, hospitals, shops and many other commercial applications.



RMS (100V)


RMS (70V)


Min. source electromagnetic force




Frequency response

80Hz~16kHz (±3dB)

Total harmonic distortion

≤1% 1kHz, normal condition

Indicator light

“70V” , "signal", "top cutting", "protection", "over temperature"


Over temperature, DC, short circuit

Power supply


Rated power


Package size (L×W×H mm)


Machine size (L×W×H mm)


Gross weight (Kg)


Net weight (Kg)


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  • Address:Jianggao Town, Baiyun District, Guangzhou, China