What solid amp to pair with DiaLogue Premium Preamplifier ?

Given what you're looking for, I'd reiterate my McCormack recommendation.  Here's a DNA-125 that has plenty of power, and you can always send it to its maker for significant upgrades later on...
https://www.usaudiomart.com/details/649472706-mccormack-dna125/

Here's a review you might find informative...
http://www.enjoythemusic.com/magazine/equipment/0800/dna125.htm

I've been using a DNA-0.5 (with Steve's A revisions) for years, and I'm now looking to pair it with a tubed preamp, which I think will be a sublime combination.  Best of luck in whatever you choose. 

Wasn't there a thread saying PrimaLuna preamps passed DC and blew up speakers? If that has been rectified I am looking for a new PrimaLuna pre too!

Yes, I read that too somewhere, made me worry about the Primaluna quality!
I could also look at the Vincent 7 pre amp, gets great reviews.

When I owned a Dialogue Premium, I had it paired with a Pass XA-30.8 into Harbeth SHL5+ speakers. The sound was sublime.

Hard to understand how a Primaluna preamp could pass DC current. I think Primaluna has been reliable since they got popular circa 2004. The Primaluna and Rogue has responded very well to tube changes. Have all NOS tubes now. Further experimentation forthcoming. 

I want a Pass Labs XA-25 to try with Dialogue Premium Pre but the Stereo 100 is so good, I’ll stay put for a while.