TILE ROOM MIX -Allows you to determine the blend between dry and effected signals. At minimum, delay teal's are nearly le. This is useful for ghost delays, and crest natural room-berks sounds. At maximum, your dry sign Is removed completely, which allows the MF Delay to work perfectly In an amplifier effects lop. EXPRESSION ASSIGNMENT: Remove the bottom panel of the pedal and use the small black selector switch to choose between Time and Feedback.