Concerning the amp, itself: Bryston has great specs (though pricy) and is comparable to Muse 160, ATI, or even the vintage Hafler DH-200/220 amps. Or, remember the BEL 1001? I have not seen on the market lately.
Jeff Rowland makes accurate amps too, but man,they are works of art. You can take off the cover and hang it on wall. Really. It comes with an optional clear plastic cover to reveal its awesome interior. But $8k !? for no better actual performance than the $200 Haflers?
ATI is probably the best price/build quality value. But either will do your speakers justice.
You cannot do better than the entire B&W line for enclosed cabinet (box) speakers. The only upward mobility toward 'true to the original', is dipole: ELS, planer/ribbon, or open baffle designs. See www.linkwitzlab.com
Once you get there, top end components, cables, or tweaks become inconsequential. You are finally free of all that nit-picking futile nonsense. You are immersed in enjoying the music. Since you can finally hear it. Though you have also become selective in what is in your collection of source material, since you can accurately hear it, and its typically lousey to mediocre sonic characteristics. But when you find well engineered, sparingly mixed, sonically superior recordings, and close your eyes... you are there. Or they are here, whichever :-)