Precision Fidelity C7/A: To modify or leave as is?


Hello:

We recently invested in a Precision Fidelity C7/A and I was thinking of upgrading some of the OEM capacitors. The original designer -- Bruce Moore -- apparently built the preamp. to sound as good as could be in stock configuration without having to modify anything, i.e. evincing the philosophy that an intelligent design should be simple and sound excellent as is.

Has anyone upgraded their Precision Fidelity with caps. such as V-Cap teflons or Auricaps and come away with dramatic differences in sonics, either for the better or worse?

Thank you.
somut

Showing 1 response by ganach

I purchased a new C-7 and loved it. I sent it in and upgraded to the C-7A.  I liked the original C7A more, especially the variable volume pot as compared to the stepped one on the C-7A   The C-7A then went back to the factory twice under warranty for blown caps. After a third incident, PF offered  me an upgrade to a C-8. I took it.

I preferred the C-7 series to the C8. The remained in service until it smoked many years later. It was brought back to life by Tom Tutay of Transition Audio with an External power supply, great parts and a 12AT7 section.