Out of the box, K100’s default DSP mode settings will be set to 32bit(X-MOS). This allows K100 to play your songs at the highest sound quality possible, giving you a brand new listening experience even if you’ve listened to a song 100 times before. At 32bit(X-MOS), K100's battery life lasts around 5 hours, but these settings can be changed to Auto or 24bit(I2S) for some normal listening and to increase K100’s battery life to more than 8 hours. We prefer leaving K100 on Auto, which lets K100 automatically detect which settings are needed.