4 ACOUSTIC brand provides a complete range of professional audio products such as Active / Passive Line Array Speakers, Full Range Speakers , Sub woofers and Digital System Controllers . Every sound system as well as many equipment parts from 4-Acoustic are designed & constructed by experienced engineers in Germany before production commences with our certified licence factory in Asia.

Guangzhou DSPPA Audio Co., Ltd. (DSPPA), founded in 1988, is a global famous manufacturer of professional audio products. DSPPA is a specialist for developing and producing the Public Address (PA) devices, Digital Conference System, Home Audio System and is famous for its high quality products and services. DSPPA has been the supplier of 2008 Beijing Olympics, the supplier of Expo 2010 Shanghai China, and the supplier of Sochi Winter Olympics 2014 Russia.