What amp to choose?


I am running Infinity IRS Omega speakers and a 6 channel multiplayer equipped with preamps, by now I only use the 2 channel stereo. This a high quality gear MSRP USD20.000. The amp is a 150Wpc and 1800VA (240V/50Hz.
I run it balanced.The combo does deliver a good soundstage, detailed and I am satisfied with that.
I love my Omega`s,but they need more power and I want to optimize the system with a better amp.
Previously I`ve heard the player with PBN AX amp this is an option, sound is just right, but price new is to high for my budget, and I have to look for used.
I will be grateful if anyone could give me some inputs.
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Perhaps I'm mistaken. I assumed these had servo woofers. I'm not so sure now. Apparently Infinity recommended between 100-500 Watts per channel. As best as I can tell they have a 4 Ohm load, I can't seem to verify if that's nominal or minimum. If they do drop to 1 Ohm, that would rule out most tube amps. You seem to be on the right track, they are reputed to be power hungry. Good luck.
Thanks!
This model does not have servo woofers, that is the Epsilon type.
Omega I think is a later design, and according to many people the best compromise.
I think the soundstage is stunning and complete (well not in the league of Dynaudio Temptations, or PBN Montana KAS/Was).
I did use a 300Wpc in 4 ohms, which they are and still they clipped the amp. with a high, but not exceeding 100db I would guess.
I ended up with the McCormack DNA 500 amp, and what a masterpiece of a soundplant.
My Infinity Omega`s is now playing the very high end music, best ever for me.
From top to bottom the DNA 500 give the most amasing music, with ease and eleganse. So easy, so accurate.
It was a perfect match with my player also.
But in this world, the upgrade kit will also be done, to get the very, very best out of it.
It will survive my next speaker upgrade...the PBN KAS/WAS or Dynaudio Temp.