LTA Ultralinear vs Pass Labs XA25

I'm very curious if anyone as listened to or had the chance to AB test these two amps together? I currently own the LTA ZOTL 10 MK II and absolutely love it for a multitude of reasons. I'm in the market for a new amp because 10 watts isn't quite enough power to drive my 88db SALK HT2's. I'm almost ready to spring for a Ultralinear but am very curious about the Pass XA25.

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Absolutely. My room is on the smaller side at 14x20. 
I’ve had the xa25 for around 6 months now and have put hundreds of hours on it. Still driving my Salk HT2-TL speakers with the Gungnir Multibit and Don Sachs Preamp. I can say it has more than enough power for my 88db Salks and never seems to loose the incredible dynamics the Pass has to offer, even at higher volumes. The power of the Pass bellies it’s on paper specs by a long shot. Don’t quote me on this but it seems to have more like 100wpc. This all being said, I haven’t heard the Spendor D7’s. I hear the Pass xa25 and Harbeth Super HL5 plus speakers is a wonderful combo and those are low at 86db. The pass seems to have quite the headroom. 
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I bought a Pass XA-25 a couple of weeks ago to drive Spendor D9s. The Pass replaces a 100W Rogue ST-100, and in my system it bests the Rogue in almost all aspects. It is much more transparent and dynamic and has no problems driving the Spendor D9s. My room is 13 x 19 with vaulted ceilings.

What type of music do you mostly listen to, and at what levels?

i have D9s in an almost similar size room driven by a big Pass 250.8 (purchased for my previous less efficient speakers) and love the sound but have been tempted to get something smaller.   I listen to mostly folk and rock at avg 80 dbC and the Pass bias needle has never moved.  I was wondering about a 30.8 and had never considered the XA-25.  I do use a balanced dac and preamp though so going single ended would be a pain for me.   That sounds like any interesting pair though and makes me think I can likely get away with much less power since the Spendors are efficient and very easy to drive.
Thanks for the feedback!

Thanks for the feedback as well. Very interesting because I was considering the Rogue ST-100 as well. And Primaluna EVO 400 for that matter. What would you say the Rogue does better than the Pass XA-25? Maybe the top end?