Preamps w/ best transparency/top end, no brightnes

My personal favorite that meets your requirement is one of the Shindo preamps.

Any of the Shindo preamps above the entry level Auriges-L has both line and phono.

Ultimate tone and dynamics with a sound that has body. Not thin like a lot of other 'hi-fi' sounding gear.

Opus88 - After a number of years of searching for these same qualities, I have settled on the Shindo Giscours preamp. To my ears, the Giscours strikes a perfect balance between transparency, tone and dynamics.

Previous preamps in my system have included (in order): Thor Audio TA1000, Thor Audio TA2000, Audio Zone PRE-T1, Modwright 9.0SE and Shindo Monbrison.

I encourage you to take a look (and listen) to any of the preamps in the Shindo line and judge for yourself.

Best,
Wayne

In my experience, Shindo, Jadis (at least the JP200 I own, though my older JP80 was not nearly as extended in the highs or transparent) and the best VAC preamps have these qualities. The Shindo preamps are the first I have heard that have made me consider selling my JP200 (in large part in order to have one box instead of 4, but in order for me to consider the change they had to match the Jadis from a sonic perspective as well), though they won't work in my current setup, as they aren't really intended for driving a signal through 40 feet of interconnects.