Pioneer announced today the HTP-GS1, a 5.1 home theater entirely designed and developed for the Xbox 360, to benefit from the 5.1 sound capabilities of certain HD games. This system also supports DTS, Dolby Digital, NR, and PRO II, and even has the MCACC (Multi Channel Acoustic Calibration System). Pioneer even included support for the MP3 format to improve the sound coming out of MP3 players.