Isnt it just the focals sound? I dont have the clear I have the elear but even on my trafomatic audio head One tube amp its soundstage is quite in your your head. HD 800s have superb 3d soundstage with the adi-2 plus THX AAA 789. Just appears right not hollow and has depth. Just adi-2 as amp I have not sent much time with but the elear hade similar traits there.