Vandy 3A and "Signature"


What does the "signature" package add to the Vanderstein 3A?  Is there a significant difference between the 3A model and the 3A Signature model?
larstusor
Usually, a signature or special edition model will have an upgraded cross-over (speakers).
the original Signature had un upgraded crossover, different tweeter and other changes...and Vandersteen has made changes at times without changing the model number/name, as do many manufacturers 
Not a 3A Sig, but I own the 2A Sig 2 and love it. I believe the 3A Sig and my 2A sig 2 both uses the same tweeter and midrange driver of the Vandersteen 5A