I just got this brand old Japanese Mega Drive: And I was wondering which of the many versions available it could be. According to this guide, this would be a: -Mega Drive 1 -Japanese -"AV Intelligent Terminal/High Grade Multipurpose Use" model -With "(R)" next to the SEGA logo And then: So it would be something between VA0 and VA4... I didn't see any "rainbow effect" as it's implied happens with models VA2 to VA5, so I guess it would be either a VA0 or VA1... or perhaps the rainbow effect isn't as noticeable on my PAL TV or something, so all I really know is that it's between VA0 and VA4. =\ Are there any other ways than opening the console to know the motherboard revision it may host inside? Some things that might help tracking down the model: -No "RF OUT" connection, just the one for composite. -Controller has red paint in the A B C letters and a quite short cord. -RESET button isn't as blue as the controller's START, but more gray-ish. -I've come across some odd sound behavior in games like Revenge of Shinobi CD (v.3). When the music track "MAKE ME DANCE" is playing, the jumping sound effect (#00) seems to fuck up one of the instruments (at least when playing the level with the killer nuns, haven't checked this on the Sound Test). -I've also noticed some slowdown in certain games (Streets of Rage CD), that I don't remember getting in my old PAL system... but then again, PAL systems are being continously slowed down. By the way, is it known which official (unmodded) Mega Drives did have the best picture and sound quality of them all?