I would suggest a used Sunfire 300, those are load invariant, high current. Run cool and sound wonderful. You could pick on up for anywhere between $5-800 send it in to be recapped and updated for another $300 and it'll drive your speakers without issue.
Should you find that you need even more, simply purchase another one and bi amp.
Ive been running them for over 20 years on all sorts of speakers and ive yet to run out of or feel the need to look for something else.
I have also measured peaks of 136db while enjoying the Eagles farewell tour DVD and that is like being there live! When I felt my amps, barely warm to the touch.
Should you find that you need even more, simply purchase another one and bi amp.
Ive been running them for over 20 years on all sorts of speakers and ive yet to run out of or feel the need to look for something else.
I have also measured peaks of 136db while enjoying the Eagles farewell tour DVD and that is like being there live! When I felt my amps, barely warm to the touch.