Pigtronix Echolution-2 Deluxe - Manual (Page 11)

Multi-Taps
SHORT PRESS cycles through all available options:
1 - delay output matches the tap tempo / delay time
¾ - delay output is ¾ of the tap tempo / delay time value
⅔ - delay output is ⅔ of the tap tempo / delay time value
½ - delay output is ½ of the tap tempo / delay time value
PHI - delay output is 0.382 of the tap tempo / delay time
value... this signature feature creates rhythmic echo
patterns based on the mathematics of the Golden Ratio.
LONG PRESS ‘locks’ the currently selected tap option and
adds a second tap. The locked tap remains at the
previously chosen value and the second tap will now move
with each SHORT PRESS, cycling through the available
remaining options.
When two taps are active a LONG PRESS gets rid of the
second tap and ‘unlocks’ the first tap.