Just a shout out for Richard and these amps. Richard is great to deal with, no question about that. This is also an extremely good deal on a really nice pair of amps.
I have had mine playing for a day and a half straight, and even using stock tubes -- JJ GZ34 and 300b, and EH 6sn7, they sound really quite good. There was significant improvement over the course of the first 6 to 8 hours, but Richard's already have time on them so they're probably already in the sweet spot.
I've not been a big fan of most 300b amps, and this one really is quite different with a presentation much closer to a 2a3 than a 300b -- a really big 2a3, that is. Very nice balance, great detail and much better top and bottom end than what you would think from a 300b.
Really fine, and quiet, amps. Mine are going nowhere.
-- Jim