The T4S/T8S contains five Bose scenes each, which have specific default processing configurations for various applications intended as a starting point in achieving great sound. The T4S Bose scenes are Singer/songwriter, DJ/playback, Drums and bass, Electric works and Factory settings. The T8S Bose scenes are Full Band, String Band, Stereo DJ, Electronic and Factory settings.T4S:Bose Scene 01 – Singer/songwriterBose Scene 02 is designed for singer/songwriter playing keyboard or guitar and sometimes accompanied by an MP3 track.Bose Scene 02 – DJ/playbackBose Scene 03 is designed for a DJ event or any audio playback need. This setup uses two microphones and either an MP3 player, mixer or laptop PC.Bose Scene 03 – Drums and bassBose Scene 04 is set up for a bass guitar, kick drum, and either an MP3 player or laptop PC.Bose Scene 04 – Electric worksBose Scene 05 is designed for electric and acoustic guitars, bass guitar and keyboard.Bose Scene 05 – Factory settingsThis scene restores the T4 mixer to the settings it had when it left the factory. Loading this scene erases any changes you previously made.T8SBose Scene 01 – Full BandBose Scene 01 is designed for a full trio band with drums, bass, guitar and three vocal mics. This setup also uses aux 9/10 for backing tracks or set break music.Bose Scene 02 – String BandBose Scene 02 is designed for a string band with a hand drum, bass, guitars, mandolin and vocal mics.Bose Scene 03 – Stereo DJBose Scene 03 is designed for a DJ to run multiple sources in a stereo configuration. It also has four vocal mics for any MC’s or announcements.Bose Scene 04 – ElectronicBose Scene 04 is designed for an electronic band. It has stereo source input, two stereo keyboard inputs and two vocal mics.Bose Scene 05 – Factory ResetThis scene restores the T8S mixer to the settings it had when it left the factory. Loading this scene erases any changes you previously made.