[good sound to great sound - open audio lab Audio: Music listening style these days is listen to a music streaming services (e.g. Spotify) with a smartphone (e.g. iPhone) and stereo earphones or a mobile speaker. BOSE, SONY and Beats sell earphones and portable speakers with good sound quality. Many people are satisfied with them. However, if you listen to music with a real great audio system, you must feel as if you were in a concert hall or a live house. There is a great sound in this world. This web site will pursue great sound at a reasonable price. Open: For reasonable price and customizability, we will use open systems and open source software - such as Raspberry Pi and Music Player Daemon (MPD). Lab: Not only using existing software and hardware, we are going to develop new software (e.g. yaMPC, get_cover, etc.) We also measure noise level or jitter quantitatively with measuring instruments such as an oscilloscope and a spectrum analyzer.]