- "One example would be an ARC Ref 75 being upgraded to a 75SE. Is the upgraded version inferior to an original 75SE?"
I owned the REF-75. Replaced the KT-120’s with the KT-150 for a nice upgrade. When ARC came out with the REF-75-SE I sold the REF-75 and bought a new REF-75-SE. The SE version has less grain, is more dynamic, is more three dimensional, and overall, is more organic and pleasurable to listen to. Definitely not a backward move.
I recently bought one of Grover’s upgraded Pioneer Elite DVD players to use as my main CD player. Upgraded caps and a beefier power supply. I didn’t A/B the unit, but the upgrades made for a totally killer CD player.
Thanks Grover. :-)
Frank