Audio Research ARC Ref 5 versions?


Hi,
Would anyone know if, apart of the obvious SE version, there were differences between earlier units of the Ref 5 and more recent ones?
If so, when was the "cut" between earlier and recent?
Thanks.
amuseb
Other than Ref 5SE replacing Ref 5, I believe Ref 5 has only one iteration with same parts throughout.
thanks Gpgr4blu, this is also what the guys at ARC say.
I think I'm going to go for one...
I just received a Ref 5SE. It is a wonderful unit. Much better than the LS27 it replaced; and, I was very happy with the LS.

Thanks,
Mike