The problem is finding a drive with a 7 track head. The stuff has been out of production for 30 years and people stopped making 7 track head stacks a LONG time ago. I've been looking for one for a couple of years now. Heck, I'd be happy just to find a 7 track head stack.. I'm still kicking myself for missing the 7-track TU10 that was on eBay a couple years ago.