With the ear speakers "floating" besides your head the K1000 deliver the closed
approximation of conventional "room" speakers, even without complex diffuse
field processors or cross over filters.
Directly connected to a decent integrated amp (via speaker terminals, not
headphone jack) the K1000 compete nicely with conventional headphone powered by
dedicated headphone amps.
A good Class A headphone amp can improve sound furthermore. SAC's dedicated K1000 amp will do even better. My current and hopefully final headphone set-up is now comprising:
Rotel RCD 991 AE
Van den Hul D102 MkIII balanced interconnects
SAC AKG K1000 dedicated headphone amp
2 AKG K1000 headphones
The sound is very detailed, rich, dynamic and neutral. Getting the same with loudspeakers would cost much, much more. And there is no interference with room acoustics and neighbours. Adding a subwoofer would partially offset the latter benefits and, being used to compact standmounted speakers, I am not really missing the lower bass range. I am not shure whether I would like the warmer, sweeter and smoother sound that is usually associated with tube equipment.
The second socket on the AKG amp, combined with the very open K1000 make them "social" headphones. Compared to that, some of there very finest loadspeakers, the Quad ESLs are almost only suitable for one-person listening (narrow sweet spot).
HP