One of 2 prototypes Mikey had is now in the hands of @Erroneous . I was obsessed with getting one of them. If @Erroneous ever wants to sell it, maybe keep it on your radar. The HD-25 is one I never got a chance to hear and I don't see them for sale either. I think I have a board laying around. I'll ask Craig about them the next time I talk to him.