I've seen some comments about the Rev SOLO recently that go kinda like this: "Works beautifully at low to medium volumes, but starts to lose that 'natural' sound at higher volumes." [ I have a Rev SOLO, and I don't know if I agree 100% exactly - I think some of it depends on the amp too. But I get the idea. ] I know I have also seen several posts that say basically the same thing about the Realist too, that in some cases people think it tends to get "muddier" at higher volumes. I have a theory (uh oh). Once the overall stage volume exceeds a certain limit, the stage sound from the bass amp and all the other instruments starts to interact or even counteract the way the acoustic bass resonates naturally. Since the acoustic bass isn't allowed to resonate in a natural way, the amplified sound as sensed through the pickup starts to sound less and less natural. Does this theory make sense? Are there other theories or facts that play into this as well?