Best Amp for Timbre, Depth and Spatial Resolution?

Jburidan,
I like that catagory of amplifiers also but you`ll only realize their exquisite potential with the proper speaker match.A push-pull 300b amp(in the power range needed) provides more flexibility in speaker selection while meeting the OP`s sonic criteria.

I owned the 802N and 800S for 8 years and 2 months of time. I stopped after hearing the 800D. Why? Because B&W missses the most important part for the absolute sound in the world in highend. There crossovers are poor in depth. I did test a few Ayre amps in depth. Pass and also Primare give both a much deeper and wider stage compared to Ayre. There is depth but not in the same league as Pass Labs. A B&W 802N never will be good in giving a 3 dimensional image caused by the poor crossovers. It is that simple!!

If you plan to keep the B&Ws, the Ayre is likely one of the better choices. This speaker does not play well with tubes due to the nature of its load (4 ohms in the bass, 8 ohms in the mids and highs). Four ohm loads should be avoided with tube amps even if they have a 4 ohm tap- almost any output transformer will loose a good octave of bandwidth off of the bottom end, simply by going for 8 to 4 ohms and the distortion is usually higher.

If you really want serve your amplifier investment dollar, the speaker should be either 8 or 16 ohms for best results! Even if you have a transistor amp, if sound **quality** is your goal, you will do better with a higher impedance speaker as the amp will make less distortion (read: smoother, more transparent). If sound pressure is your goal, there is a slight advantage to four ohm speakers, assuming the efficiency is otherwise the same.

The 802N has a very old tweeter what can become harsh. So you need a warm souding amp. And you a lot of power and a high amperage to control the paper units of the 802N.

I should have asked in my 1st post, but what is it that your system lacks? Is there something you need to improve or are you generally happy and just want to improve without loosing what you already have?