So far as I've seen it's dead quiet.Is it as annoyingly squeaky as an Echoplex? These look simpler. Also pretty good deals on these. I paid $1000 for a Fulltone Echoplex and had to throw it back out there, couldn't handle the tape squeak.
I don't have a photo but on one of my WEM units somebody moved the last playback head to the top side of the tape loop up by the tensioner. I would have to guess they were longer for a longer delay time. Have at it!I can't claim to have mastered the controls yet, but I've so far been frustrated trying to get long delay times out of it. It does slapback like nobody's business, and I can make it do all sorts of awful things, but one of the things I want from a tape echo is longer delays. Sadly I think that's just a limitation of the tape length. I'm guessing the Roland RE-301 gets those long juicy delays because the tape looks like this: