The Dp-67 is new in the line-up as a upgrade for the old Dp-65v. The Dp-55v is much more detailed, warmer, less digital to my ear than the old Dp-65v. Even though the Dp-65v has a superior build. The Dp-67 takes the 55v from 48 khz to 96 khz. Since where only talking Redbook the Dp-75v still looks mighty attactive at current used prices. And I wouldn't call a Dp-75v old just yet! Why are you looking to upgrade the 55v? It might be on the bottom of the heap as far as Accuphase is concerned, but a sweet little cdp IMO. Your own ears will have to be the judge prior to making any leap. Good Luck!
