Personally, I would be very very surprised if E-600 is a model change from E-560. The E-600 is most likely a further refinement of the E-560, but not a model change.
Accuphase has also claimed that E-560 is a model change from its predecessor, the E-550. In fact, lately they claim this almost every time they release a new model. I have no idea why they keep on doing this, especially since immediately after they make this claim they start to talk about AAVA which was introduced in 2002 or so. Very lame advertisement given their status.
To not be misunderstood I should also add that I am a big Accuphase fan and currently I own only Accuphase electronics. What I have written above is one of my biggest complains about the brand.
