ECCI, a well-known Chinese audiophile-level music facility manufacturer was founded by a famous tuner, AMP designer "Mr. Zombie" in 2007. The completed tuning, the balanced and more listening sound make up a more surprising sound field, reconstruction and Layering. It applies to different style of music. The extraordinary performance of music will refrash a beginner's feeling and experience of an in-ear headphones. It has double diaphragm which creates a huge sound field. It has a powerful and flexible low frequency and an incomparablly balanced adjustmnet.