You may say it's too budget for your great speakers (and they are, I had the 6's once), but when I owned the Adcom GFA 5802 some years ago (I had B&W at that point) I took it in to the dealer to see about upgrading to a Krell amp. They set me up with Aerial Model 8's and let me compare the two amps one after the other - the Adcom smoked the 3k Krell (one of the KAV models, circa 1997), and I am not one to use the "smoked" adjective much. You can get one used for pretty cheap, I would think around 1k. If you mean 'budget' in the 2-3k range though, buy something like a used McIntosh MC300...
One thing is for sure though - get as MUCH power as you can for those speakers. The two I recommended are each 300 w/ch, a minimum I would think unless you have a very small room or listen to solo acoustic guitar music only :>} There aren't a lot of other 300 w/ch out there for the price...
That said, I've only heard the 7B's.