Established in 2007, Shenzhen Linden Technology Co., Ltd. is a high technology corp. majored in R&D, manufacturing and marketing of digital Audio/Video and other electronic products. We have a R&D team of substantial experience in embedded software development, analog and digital hardware design, PCB layout and fabrication, as well as test and quality ensurence in mass production. This team is capable of creating a product from concept to mass production. LD8200 Digital Power AmpSpecification:1.3W*22.High Fedelity3.Class-D Power Amp4.Rechargable Lithium Battery Power