Try older Classe'Audio. DR8, DR9, Fifteen, or Twenty-Five.
All great amps with plenty of current drive. Jason Bloom of Apogee used to demonstrate the Stage at audio shows with the DR8. Threshold S Series amps like S/200, S/300, or S/500 would work fine too. Best Apogee demo I ever heard was Apogee Duetta Signature driven by Threshold SA4e at Bay Area Audio show back in 1989. I never forgot the magic. Threshold SA4e is essentially unobtainable these days but it was one of the all time great Nelson Pass designs.
All great amps with plenty of current drive. Jason Bloom of Apogee used to demonstrate the Stage at audio shows with the DR8. Threshold S Series amps like S/200, S/300, or S/500 would work fine too. Best Apogee demo I ever heard was Apogee Duetta Signature driven by Threshold SA4e at Bay Area Audio show back in 1989. I never forgot the magic. Threshold SA4e is essentially unobtainable these days but it was one of the all time great Nelson Pass designs.