4001 Normal 4002 Hall 4003 Vocal 4004 Soft 4005 rock 4006 bass 4007 Produce reverberation pattern of a convert hall. 4008 Enhance the vocal clarity of human voice. 4009 Enhance the music effects for soft music at midnight. 4010 Product the rock or disco effect. 4011 Enhance the bass of music 4012 Configuration 4013 About