Pre-amps with seperate power supplies .....


I have a pre-amp with a seperate power supply that is connected by an umbilical cord. I am not an electrical engineer and I do not pretend to be one nor do I play one on TV.....I am pretty sure that there is DC current going from the power supply to the main pre-amp to power that component. Does it make any sonic sense to upgrade that umbilical cord seeing how that it is ''only'' carrying DC current ????? The pre-amp in question is a Classe' CP-700. I have asked this very same question to the fine people at Classe' and they said improving that cord would not make any difference.... So, I will ask that question here and also see if anybody has actually upgraded that power cord.
garebear

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I have not read all the responses but will agree that just because a product has a separate power supply does not make it better. It all comes down to the design. You can put a crappy design in a separate enclosure just as easily as a superior design.
We do it in our Purity products due to space restrictions. There is no way we are fitting a dual mono PS and all the analog circuitry into a single chassis.

I also agree that umbilical cords 'can' make a big difference but just changing one out does not guarantee better performance. You have to take into consideration wire gauges that can alter voltages if differences are too large.