D series amplifier is a representative products of Calm Audio Electronic Co.,LTD which shows  the technical and productivity, it also a standout for professional audio manufactory  stepping into digital age, B series has broken through a huge technical barriers and subverted the traditional design concept of professional audio, and has achieved a integration of multi-disciplinary cross-technology .

This series of products are unlimited used in various fields. such as Musica Tour ,Opera House,Classroom,,Movie Theater,Amusement Park,Broadcasting and Industrial area etc.

Specification