T+A PA 3100HV vs Pass Labs X350.8


My current gears are:
Revel Salon 2 speakers
Anthem STR Preamp and Moon 390
Mcintosh MC462 Power Amp
I have spent more than a year with the MC462 and I think it was the weakest one on the chain. I want to look for something else to replace The Mc462 and there are some possible choices:
1. Pass Labs X350.8 and Moon 390/Anthem STR as Preamp. I had chance to compare A/B between Mcintosh C2700/MC462 vs Pass X350.8/XP30 at the local dealer on 2018. The Pass Labs was simply much better.
2. T+A PA 3100 HV Integrated which is said to be an excellent amp. I will keep the Moon 390 and use it as DAC/NP by RCA fixed line output if I go this route and will look for better possible replacement later. I also had chance to compare A/B T+A PA3100 HV vs Mcintosh C2700/MC611 on this January. The T+A integrated was the better one.
I cant compare the T+A and Pass in same room because they are from different shops and home demo is not possible in my country.
What do you think is the better choice for my speakers? Hope I can get some help here. Thank you.
mrrui
86 dB sensitive speakers in that 4 to 6 ohm range, and a good sized floor stander at that.  I bet that Revel speaker needs a high current amp to drive it.  From my *general* listening experience, Pass Labs amps, especially the dot five and dot eight series bring the dynamic goods to the table.  Plus, the air, space, layer separation, and that wonderful midrange bloom that lights music from within with Pass equipment is good stuff.  I've listened to some Mc gear, and while it seems pretty good to me, it seems to have a little bit more laid back character; it is not bad to say the least.  I think getting a 350.8 will solve your problems as that amp doubles to 700 wpc at 4 ohms.  That's some beans right there.  In my experience, Pass amps can be picky, and there is definitely a synergy that comes to life when a Pass line stage is paired with a Pass amp.  While this might be apples and oranges with your situation, I have Pass Aleph 1.2s paired with a X0.2 three box Pass line stage behind it and it's glorious; prior to the X0.2, I had a Sonic Frontiers Line 2 behind the Aleph 1.2s.  While it sounded *okay*, even with getting some more expensive tubes from Upscale Audio (when he ran it [the business] out of his house...), it still did not *pop* like equipment of that caliber should.  When I sprung for the then newly inrtro'd X0.2s, and let it burn-in, holy Moses, it's like someone pulled off a veil and those big Class A monos made my Von Schweikert VR6s sing and soar very high!  I mention my experience because you have an Anthem (the old Sonic Frontiers) line stage and you are thinking about getting a 350.8 Pass amp.  In any case, happy hunting as the saying goes.  
I have the x250.8 and love it. I heard a difference between it and the 350.8. If you can, compare the two before choosing.
@david_ten I would re-audition the T+A and ask if the shop could bring it to my home for short demo after the social distancing. Thank you.
@dep14 I would also consider your suggestion. C2700 is sure a nice piece and I would save a lot if I go this route. Just curious because I have auditioned the C2700 on different set up at the shops and didn't have time to make a fair judgement about it.
@mrrui You are welcome.

@hegelsjh You are welcome.

Pass [also] didn’t recommend aftermarket power cords, though they have moved somewhat on that position. : )

Power cords will also bring improvements. In my experience / experimentation, the upside delta from the power supply / conditioner was higher than that from power cords. However, I recommend both to get the most out of your Pass amps.

Your post caused me to revisit some of the statements made by Nelson Pass about not using power conditioners with his amps.

@pennpencil
What was the difference between the X250.8 and 350.8?
I am considering the 260.8 monos, any experience with those?