A friend was producing a Valve Phonostage that was a evolving design and produced in Various Prototypes.
I supplied a set of ears to offer assessment on the SQ of the models as they evolved.
During the assessments, there was always a good impression to be on offer, and progressive alterations, such as, Power Supply Improvements and Boutique Components selectively placed, in most cases produced a
further perceivable improvement.
A later model Prototype showed a vast improvement when Z Foils were added, but as a result of a another Component Exchange, Jumped a major step forward in improved SQ.
This happened when Miflex Copper Cap's were exchanged for
Audyn Copper Cap's in the Circuit.
I supplied a set of ears to offer assessment on the SQ of the models as they evolved.
During the assessments, there was always a good impression to be on offer, and progressive alterations, such as, Power Supply Improvements and Boutique Components selectively placed, in most cases produced a
further perceivable improvement.
A later model Prototype showed a vast improvement when Z Foils were added, but as a result of a another Component Exchange, Jumped a major step forward in improved SQ.
This happened when Miflex Copper Cap's were exchanged for
Audyn Copper Cap's in the Circuit.