Regarding the engineers at Classé knowing what they're doing, I recall a communication I had with the company many years ago. I had just purchased a new Classé amp that came with their $180.00 "Reference AC Linecord", a modest cable with a Schurter IEC plug on the amp end, and $3.00 yellow Eagle brand male plug on the wall end. Taken aback, I sent off a letter questioning their choice of an el-cheapo plug on a so-called "reference" cord. I received back a nice letter from a vice president at Classé stating that they had carefully auditioned a variety of AC plugs available at the time, both expensive and inexpensive, and found the modest Eagle plug to be the all-around best performer.
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.