The Reverb effect pedal simulates the effect of reverberation in an enclosed space. The Reverb pedal uses multiple delay circuits to simulate the effect of reverberation.
room size - Determines the size of the virtual enclosed space.
pre-delay - Determines the length of time it takes for the echo to come back. (The length of the gap between the echos)
feedback - Allows adjustment of how much of the processed signal is fed back into the effect.
damp - Control over the level of the devices low-pass filter. Low frequencies are passed while high frequencies are filtered out.
level - Output volume.