Peavey Ultraverb II - Page 13

but is post-feedback. As a result, the feedback setting must be greater than 0
for any delay effects to be audible. Setting feedback to 0 is equivalent to
turning off the delay.
3.0B Predelay->Gated Reverb->Tapped Echo (gttE)
With tapped echo, the feedback is derived from the longest tap (tap 1).
3.0C Predelay->Reverb+Chorus->Stereo Echo (rCSE)
The Chorus and Reverb signals are both summed in the right and left
channels.