Best Tubed Preamp For A Warm, Rich Sound, Yet Still Detailed and Agile


As the title says, I am looking for an exceptional preamp (obviously tubed) with warmth and liquidity, some of that golden glow, in the midrange and highs. I do not want slowness, or lack of detail, however. My budget is up to $6,000.00, for a used model. 

Based on my research, many of those that might make the list are very rare to find, and other recommendations would be greatly appreciated. 


nightfall
Atma-Sphere MP-3, would be my recommendation. Even better if paired with Atma amps.
I never knew sound could be reproduced so cleanly and transparently.
B
Agreed on Shindo listened to my friends Vosne Romanee/Montrachet combo the other night amazing sound! Also would recommend Audio Note an M3 linestage new is in your budget or you could score a used M3 or M4 if you keep an eye on the ads here.
From time to time, you will see a Doshi Alaap come up for sale.  Line state only would be well within your budget but they are more rare.  Full function would be near the top of our range.  Also highly recommend VAC Ren. 
VAC Renaissance mk III would probably fill the bill nicely, very hard to find on the used market though.