Sounds Great (SG) implements semiconductor technology to traditional speakers that transforms earphones into Professional Stereo. It makes users, poor or rich, can enjoy the soul touching sound from less expensive earphones, like in a gorgeous theater. SG is going to implement this crossover technology to: 1. Earphones and Hearing Aids 2. Speakers for portable products: cell phones, notebooks, etc. 3. Innovative applications - Hidden speakers for smart eyeglasses, smart table, smart mirror, etc.