The external PSU on the CP-700 is two PSUs, one for each channel, with a copper shielding plate in the middle, and the DC current should be pretty darn flat, and free of EMI and RFI parasites, although I do not have an oscilloscope to test. Look at the number of pins on the thing, I am sure at least one is involved with external shielding of the DC cable.
That said I doubt that we CP-700 owners can do much more to upgrade PSUs.
As a new CP-700 owner I can attest how terrible it is, very jealous and conspiring to take me away from the family every night. The sublime neutrality and wide precise soundstaging with those SACDs is addictive for sure. Last night I tried to read while auditioning Haydn's lesser oratorio, The Seasons, half an hour later I had read only 10 lines, the VIIIth cranial nerve feed got the better part of my brain.
That said I doubt that we CP-700 owners can do much more to upgrade PSUs.
As a new CP-700 owner I can attest how terrible it is, very jealous and conspiring to take me away from the family every night. The sublime neutrality and wide precise soundstaging with those SACDs is addictive for sure. Last night I tried to read while auditioning Haydn's lesser oratorio, The Seasons, half an hour later I had read only 10 lines, the VIIIth cranial nerve feed got the better part of my brain.