We are one of the leading car amplifier manufacturers in Korea and have factory in Korea and China. We produce all types of car amplifiers, entry, medium and high end, class AB, class D, FULL MOSFET......We produce many worldwide famous OEM products.Your OEM enquiry will be welcomed.Please contact me by email or telephone.Best regardsPaul Kim / presidentM& TECH INC.Koreaoffice tel no : 82-32-321-8642mobile : 82-10-5278-9321