Accuphase model numbers?

What is the difference in the Accuphase CD player v models as in 55 vs 55v, 65 vs 65v, 75 vs 75v, etc. Does the "v" indicate a upgrade to the non v or is it different model?
they are new models.
They are all different models and all have been discontinued. Current production is the 67v, 77v, 85v, etc. If you want more info e-mail me.
The Accuphase website is usually pretty thorough in its explanations of its products. There is a link to their products here with details on all current models. There is also a section showing non-current models at the bottom of the page.