While I have not heard the headphones that you speak of, I would vote on the InnerSound Isis for three grand. When setup correctly many admirers compare these speakers along with their larger brothers the ERos to wearing headpones.
Senn HD600 headphones = what Speakers?
Is there any speaker under $2500 (new) that could offer me equal or better performance than my Sennheiser HD600's in terms of clarity, dynamics, transparency, etc? Maybe a stupid question since it's about comparing speakers vs headphones. I'd appreciate any thought. Thanks.