how to upgrade this digital front end ?

I agree with Cornfedboy. I'm using an Accuphase DP75 and I love its musical almost analog sound! The DP 75v is the latest version which also plays SACD's and has an even better decoder section. However, if you have your doubts about the future of the SACD format (as do I) and are content with the conventional CD redbook format, then you can save a bunch of cash by buying the 75 instead of the 75v if you can find one! And with the money that you save, you can buy a great turntable rig and PLENTY of audiophile vinyl and CD's!

I had my mind elsewhere when I wrote about the DP-75v. I still love the performace/price ratio of the DP-75 (earlier version). B.T.W. have you had the oppurtunity to A/B the 75 with the 75v? What did you think?