well I saw a local ad for a JMD50 head and I've honestly never heard of them. I looked into them out of curiosity and see they were released about 10ish years ago? Tube powered digital "modeling"? I never hear about it anywhere and specially not here, I imagine it was a huge flop. I have to admit the concept is really cool and I almost feel that possibly the amp was ahead of it's time concept wise. I'm not interested in getting it but I'm curious about this new to me model.