The Divas really aren't nearly as difficult to drive as the Apogee name seems to suggest (mostly a Scintilla related stereotype). The one problem can be the number of amps needed due to crossover configuration (can use a single stereo unit with the passive crossover...may need 6 channels with the DAX). The Diva sounds incredible with Krell amplification (Best I ever heard was with KRS series, but was also outstanding with KMA-200 and even KMA-160....would not use any Krell after the KSA-150/250/MDA-300/500 generation). Another great match was a pair of Classe DR-9 amps (which can be found at around $1k each on used market) As with Krell, not fond of newer Classe units and the DR-9 was especially good example of the breed. Briefly heard Divas with Adcom 555 amps and they did a fine job for amps on the very cheap, though I wouldn't choose them myself for such a setup.
