We hold strengthening and perfecting our items and repair. At the same time, we get the job done actively to do research and progress for 6 Channel Amp, Pc Based Audio Spectrum Analyzer, Test Ear Buds, Voice Frequency Analyzer, Mic Test Check. Our products enjoy good popularity among our customers. We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits. The product will supply to all over the world, such as Europe, America, Australia,Lithuania, Austria,Portugal, Russia.After years of development, we have formed strong ability in new product development and strict quality control system to ensure excellent quality and service. With the support of many long term cooperated customers, our products are welcomed all over the world.