You need to audition the Plinius SA250_mkIV. It delivers the current your Apogee's demand. While the BAT Power amp products are fine, to my ear they are not quite as musical and do not take control of a speaker like the Plinius Amp when run in class A.
BATVK500 in Plinius league?
I have a chance to buy a used BAT VK500 plus BATPAK for my Apogee Duetta Signature speakers (currently use Classe DR9) Plinius has been suggested as a good option, but is nearly twice the price than I can get the BAT for. Any comments on how the BAT stacks up against Plinius amps? (or other amps, Classe, Krell,)