When Sync is enabled, the delay time synchronizes to the Pro Tools session tempo. When Sync is disabled, you can set the delay time in milliseconds independently of the Pro Tools session tempo. The Sync button is lit when it is enabled.
When Sync is enabled, the Delay control lets you select a rhythmic subdivision or multiple of the beat (based on the Pro Tools session tempo) for the delay time.
When Sync is disabled, the Time control lets you set the delay time in milliseconds and seconds (1 ms to 4.00 seconds).
The Feedback control lets you adjust the amount of delay feedback. At 0% the delayed signal repeats only once. As you increase the feedback, the number of times the delay repeats increases. At 100%, the delay doesn’t repeat indefinitely, but it does last a very long time!
Note that each Delay mode produces a different feedback pattern, especially when the L/R Ratio control is not centred.
The Mix control lets you balance the amount of dry signal with the amount of wet (delayed) signal. At 50%, there are equal amounts of dry and wet signal. At 0%, the output is all dry and at 100% it is all wet.