Well, I have an earlier post on this thread regarding my experiences with VTL, which have been at least 90% positive, so I won't repeat that here. I'd just like to say, they are apparently a 2-person company. And I got a very positive & fast response to every one of my issues or questions every time I called them, even tho I'd bought both of my VTL components used. They did often point out however, that I'd get better service, etc. if I'd bought them brand new from a dealer. I guess you can't blame them for that.
Hey--if you buy used audio gear that's not under warranty any more, you're taking your chances. VTL is a "boutique brand", I think it's fair to say, so maybe you have to weigh the trade offs--you can buy a Camry, or a Ferrari, or a vintage BMW, what do you want?
Recently I called Krell, because I was thinking of buying a used FBP amp, & asked to know the history of that particular amp. The guy at Krell I spoke to, absolutely refused to give me any info, & was very rude & abrupt about it. I've never gotten that treatment at VTL, or any other tube mfg.
With any high-end purchase, esp. used, you've gotta ask yourself, where & how can you get service if you need it. If I lived on the West Coast, I'd be way into VTL......as it is, I still happily own a VTL pre-amp......
cheers!