we are a professional car amplifier manufacturer in China. We have designing office and sales department in Korea. The factory is in China.we can offer 1ch/2ch/4ch/5ch class A/class B/ car amplifier for customer. We can design the heatsink and make the mold for customer. We have over 50 kinds of heatsink design for customer to choose. OEM/ODM/SKD are our main way. we had developed class D/class T car amplifier 3 years ago. we have professional and rich experience engineer they design car AMP for over 10 years. we are welcome cooperater from wideworld OEM.our buyer are all over the world now. we are producing car AMP by OEM for USA and Janpan famouse brands now.