Power amp/integrated amp suggestions for SUPER POWER HUNGRY/INEFFICIENT SPEAKERS

Thank you all for your suggestions. I neglected a crucial part of the recommendations: my budget for the amp is going to be under $1000. I’d like to keep it under $500 if possible. Unfortunately, that rules out quite a few of your suggestions.

It appears that the Lyr can in fact be used as a preamp with a power amp for passive speakers. With this in place, I’ll be able to flavor the sound by tube rolling, of which I have a couple different pairs to choose from. I don’t feel I need a power amp that does much than give the current a clean transparent boost.

I’ve been giving serious thought to using a studio monitor power amp like the Yamaha P2500, as was suggested in another thread. It would be an unusual setup, but it just might work. The Bryston amps also look like a good used option.

@soix that amp looks pretty good. I just made an offer for it. Thanks for the pointer!

@stereo5
@akg_ca
Any thoughts on the power amp @soix recommended?
https://www.hifiengine.com/manual_library/mccormack/dna-05.shtml
As I said, I am willing to stretch the budget up to $1000, which I feel could give me a very respectable used amp.

@soundsrealaudio The room’s going to be small (~150-200 square feet) with my seating about 8 feet from the speakers.

OK all, counteroffer at $600 for the McCormack DNA 0.5. It looks like a really solid piece of gear, and I'm itching to go the power amp route. Make it a deal?

@soix Thank you for that. Let it be said that I have the option of selling the Lyr2 + a pair of headphones for ~$1000, of which some (or all) could go to a proper preamp. I'm not really using that piece of gear any more, and have been planning to part ways with it for a while.

Any thoughts on Saga, Schiit’s passive/active preamp? It seems like a good cheap option for something that’s pretty transparent. I'm already creeping toward the high end of my budget, for the speakers, amp, and preamp, so if getting this will give me most of what $1000 would give me, I see no point in spending more.
http://www.schiit.com/products/saga

I got a used McCormack DNA 0.5 for $650 shipped. It arrived yesterday, and while I haven't heard it yet, the build quality and soldering looks top notch. Can't wait to try it out once I get some speaker wire!

@soix thank you thank you thank you for suggesting that amp! I hooked up my system today, and even with the Lyr as a preamp it sounded fantastic. The bass especially was tight, controlled, and impactful. The McCormack drove the speakers extremely well with minimal distortion. I am very happy with this purchase, and now just have to sort out some room issues to get the most out of this system.