Which integrated amp for rock/metal (and why McIntosh?)

Dear all,

I recently obtained new speakers (Fyne Audio F704) and I have the idea (my wife says it too) that my NAD M32 doesn’t seem powerful enough to push music through our living room. On the Totem Winds I had before, it was less of a problem, the F704’s are really massive. I mainly listen to rock / metal, my wife likes to add some EDM/EBM (dance) in between. I’m also running a REL Carbon Special so the low is covered well :)

Which integrated amp should I look for (probably opening Pandora’s Box here) to enjoy rock/metal? The few hints I found online, were Krell and McIntosh. I’m wondering if it’s because of the "rock ’n roll name" (Krell) or the rugged look (McIntosh). I could for example get a MA9000 (300w, Class AB integrated amp) - would that be a good choice? Is it worthwhile to move from a Class D amp to AB?

Looking forward to read your input.