Hardware for high quality software based DSP

Mark,Thank you for your answer

One thing we found with electrostats like this is that for best SQ there cannot be any other speakers (aside from possible subs) in the same room, nor any musical instruments with diaphragms (such as drums) or that can otherwise easily resonate. They absorb and or otherwise interact with acoustic energy from the speakers that conveys soundstage width and especially depth information (i.e. low level decays).

This is true for most loudspeakers not only for dipoles ime. My 4x10"+ 18" bass amplifier is a real annoyance wrt drums ( and overall!), and yes bass reflex loudspeakers make some effective basstrap!
Closed/sealed almost do not interact.