I have the latest Revision of the HE-560 now.
Sound is definitely improved. The Bass, most notably. It goes as low as the HE-6, maybe a tad bit more. There is more Bass than the previous test HE-560 unit. Bass is still very tight.
Transparency in soundstage is much improved due to change in the ear pads. I am no longer hearing those undesirable internal reflections in sound.
The Treble seems largely unchanged, still smooth and somewhat recessed compared...