But what worries me is that they are all getting very long in the tooth.
I dunno, is there really that much on them that couldn't be repaired with a little bit of know-how on a component level? Might have to do some detective work to source out some modern day equivalents, but I'd assume it could be done, but maybe I'm wrong. Reliability is probably the number one quality I look for in an amp, but if I ever picked up one of those older GKs I'd probably take it to a tech for a quick diagnostic and service and use it without any concerns.
At any rate, aside from their undeniable mojo, I don't see much reason to go with older generation RBs over their newer versions, though I still include the discontinued 400RB-iiis and -ivs in that newer group for some lower powered fun.
I might feel differently about the earlier 400RBs if they had on-board DIs, but that's a deal breaker for me. The 800s have one of course, but I'm not willing to go to 3RUs for it and a bi-amp function I'll never use.
