Hi James,
I'm on vacation in Germany and just recently read the review of the 4B3 in Fidelity magazine. Correct me if I'm wrong, but I think the quote "best amplifier for that price on the market" comes from the closing paragraph. Is that right?
If so, it's a somewhat misleading translation. The original German says the amp is "eine der besten Endstufen, die man für Geld und gute Worte kaufen kann." Correctly translated, the gist is that the amp is one of the best money can buy -- i.e., regardless of price, not just "for that price." My German is far from perfect, but I checked with a friend who is fluent and she confirmed this.
Well, I haven't done any extensive comparisons, but I can tell you I'm really happy with my new 4B3 (I understand I was Audio One's first buyer). I agree with the glowing reviews I've read, and I imagine the sound will only get better as the amp fully breaks in.
Cheers,
Rudy (aka "007")