Mine has v. 1.1. I haven't used it with my amp yet, just my POD. I had that same problem when running it as a post delay, after the POD then straight to mixer. I didn't when I ran it pre POD, like a traditional stomp. I have a bufferd volume before it when in pre. I saw an article that stated it may have to do with a lack of buffering? Tomorrow I will get a chance to run it post in my amps tube buffered effects loop. I'll try updating it if the levels are still off, and let you guys know what I find.