Attack range = 50us to 50ms ( 0.05 to 50 milliseconds )
Attack controls how quickly the gain reduction will begin after a signal has crossed the threshold.
For example - when your guitar signal goes above where you set it to activate (threshold) it will take anywhere from 50us to 50 ms for it to compress the signal.
Release range = 50ms to 1 second
Release controls how long it takes for the compressor to return to it’s level after the signal drops below the threshold.
For example - when your guitar signal goes below where you set it to activate (threshold) it will take anywhere from 50ms to 1sec for it to stop compressing the signal.
*Threshold is set as a ratio that determines how much gain reduction will be applied. *
On this pedal you can choose from the following ratios: 2:1 4:1 10:1
* If any of this is confusing – which it can be! - you can check out these links:
Empress Compressor controls video
Great explanation of compression pedals and how they work - he's like, the Rocky of guitar lessons.
Always a great resource for practical pedal usage though sometimes a little long-winded :)