2290 MASH controls delay feedback and input level giving you a hold functionAna-  MASH controls Feedback and delaytime  (down) for realtime funTape- MASH controls delaytime and boosts feedback to max for some space echo style feedback orgyDyn MASH controls the Gate threshold.Pushing MASH switchtes to a normal delay without the gateMod- MASH raises the depth of the Chorus modulationCrys MASH controls raises the Octaver send , Feedback and spacing of the Octavers filter bankRvs- MASH controls Kill dry and mutes the dry signal for a Reverse only soundToneprint 1 - Tape delay with MASH controlling feedback and soft clip drive amountToneprint 2 - Crystal delay based TP with MASH controlling delay feedback and the tone of the octaveToneprint 3 -  MASH controls the input level of your instrument. !!Note: you wont hear  any signal unless you press MASH switch while playing!!!