I don't think so Dan. This sounds like a truncation/rounding/overflow type of error. I've used plenty of 12 bit delays and reverbs that don't do this. I will record an example and post a link. I think it's just a bug and should be fixable in software. I could see if I was trying to run an 8 bit delay but 14 bits of plenty. There's no reason a guitar with it's limited dynamic range couldn't be represented in 14 bits.