Recommend a Tube Pre & SS Amp Combo

Hello,

Having been mulling and searching this over quite a bit and have come to the following conclusion:

My next upgrade will be a tube pre amp and a ss amplifier. I love the tube sound but also like lots of power as I find my current SLI 80 gets a bit compressed as the volume gets loud. I am also trying to make it work with a HT system, which is another reason for the ss amp piece of the puzzle.

Current speakers are Dali 400mkii.

Looking for recommendations on the combo with the following "needs":

Warmer sound than lean
Lots of power
HT bypass on the pre (req.)
Prefer to stay with a single brand for both, but am open to suggestions
Prefer made in north America
Improvement over the SLI 80, if you have experience here

Thanks in advance!