I’m by no means an expert and cannot speak to class d amps, but old school heavy duty class a amps are made for this sort of load. I drive my Apogees with a Balanced Audio Technology VK-600 with bat pack and couldn’t be happier. Yes, they run hotter than class d (and aren’t nearly as efficient), but everything is a compromise in one way or another. At the end of the day, the quality of the sound and the experience are most important to me.
