Sound Works & Supplies Limited (SWS) was established in 1998 and R&A Marketing Company Limited (R&A) was opened in 2015. Their head offices are located in Hong Kong.

SWS and R&A companies are an experienced high technology System Integration company, focusing on high-end pro-audio projects e.g. Theatres, Stadium/Venues, Exhibition and Convention Centers and TV Stations. It also supplies high-end audio equipment to Pro customers e.g. Theatres, Rental Companies and TV Broadcasters. Furthermore, it provides one stop solutions to independent AV consultants, designers, system integrators and contracting companies including EASE simulation design, pre-sales technical support & after-sales service support.

In order to provide better & faster pre-sales and after-sales services to Chinese customers, Guangzhou, Beijing, Shanghai & Nanjing offices were set up respectively. As business are rapidly going up, all these offices are expanding right now.

SWS and R&A are distributior of the following international high-end audio products in Hong Kong & China:：

Appsys ProAudio	- Versatile digital audio bridge from the Switzerland
Countryman	- Professional Microphone from the States
Dan Dugan	- Gain sharing automatic microphone mixing processor from the States
d&b audiotechnik	-Germany high quality Loudspeaker systems and electronics
Dynaudio Pro	- Denmark Professional monitor loudspeaker system
LAWO	- Top-end Production Mixing Consoles from Germany
Shure	- Full Range of Professional Audio Products from the States
Shure DIS	-  DDS 5900 digital discussion system from the States
Yamaha CA	- Japan High-end Digital Mixing Consoles