I hate to break it to you but those speakers are too small to sufficiently fill a room of what I believe is your size. Sitting 4 meters away? That’s pretty far. How close are you sitting from the wall behind you and where are the speakers located in the room?
Before you can figure out what amp you need you need to figure out your power requirements. There’s a formula which I can’t recall but I’ve used
this website before to figure out if an amp I want to use is powerful enough. I did you the courtesy and punched in your listening position, your speakers rated sensitivity, and the power handling of the Aegir in stereo mode. I’m giving the triangles the benefit of the doubt with the 90dB sensitivity rating. Not every manufacture is Eric Alexander (of Tekton Designs)
On paper the aegir seems more then capable. It’s really hard to say if the aegirs will be enough without knowing more detailed specifications of your speakers. If they have a wonky impedance curve, combined with a nasty phase, the current demand needed will be much, much higher. And during peaks you could be looking at needing much more current then what I think the Aegirs are capable of.
Given my experience with bookshelf speakers and their power requirements, and the amps I’ve used with them, I know that they can actually require tons and tons more power then what it says on the tin. I would often times need over 100W to feed my KEF LS50, and well over 100W with my Harbeth 30.2. This is, again, typically caused by the passive crossovers in the speaker design which suck up and waste power. I think the given power handling of the speakers on the manufactured website is a clue. 90W is probably the RMS which indicates during peaks the speaker might want even more powerr.
Try to find a vintage amplifier like a Mitsubishi DA-A10AC. This is an amplifier which is extremely underrated and has tons of power. I haven’t actually used one but I know they have very low distortion and it’s just a simple and well done topology.
Ps. If you really listen at 65-85dB at 12 feet away then you’re probably fine with Aegirs. But I kind of ignored that part of what you said because it’s most likely you’re underestimating how loud you will listen. Having the headroom is important... maybe it’s just me.