I do think you are being a little too picky in your requirements. I would suggest broadening your search and then audition some of them; you might be surprised of the results and how they might conflict with your prejudices.
I own an Audio Valve Assistent integrated. It's supposedly rated at 20 or 25 W/Ch, but I consider it to be more like 10 because it has a hard time driving anything except very efficient speakers. When mated to an efficient, tube-friendly speaker, though, it sounds excellent. But alas, it's push-pull, so it won't satisfy your stringent requirements.
I also have a Jolida 302b and for the price I cannot recomment an integrated more highly. I have a nice "big system" that sounds great, and adjacent to it sits my "little system" which is powered by the 302b. Many of my friends actually prefer the little system.
The Jolida can drive real-world speakers that the Audio Valve can't. For most people, it would get my recommendation. If, however, you have efficient, tube-friendly speakers, then the Audio Valve will astound you.
I think you're going to have to drop some of your requirements to find something in your price range; just let your ears be the guide rather than the specifications.
Michael
I own an Audio Valve Assistent integrated. It's supposedly rated at 20 or 25 W/Ch, but I consider it to be more like 10 because it has a hard time driving anything except very efficient speakers. When mated to an efficient, tube-friendly speaker, though, it sounds excellent. But alas, it's push-pull, so it won't satisfy your stringent requirements.
I also have a Jolida 302b and for the price I cannot recomment an integrated more highly. I have a nice "big system" that sounds great, and adjacent to it sits my "little system" which is powered by the 302b. Many of my friends actually prefer the little system.
The Jolida can drive real-world speakers that the Audio Valve can't. For most people, it would get my recommendation. If, however, you have efficient, tube-friendly speakers, then the Audio Valve will astound you.
I think you're going to have to drop some of your requirements to find something in your price range; just let your ears be the guide rather than the specifications.
Michael