Pas de différences entre les 2 non. Cependant, historiquement, certaines valeurs ont été changées, et il y a eu quelques modifs au cours du temps.
Citation:
The only change that impacted the tone at all was the addition of R11 (labeled R14B in the KTR), a 15k resistor, in 1995 at around serial number 300. The other changes were R1 (R1B in the KTR), a 10k series resistor that prevents static on the input, and R28 (R1C in the original), a 100k resistor on the output that changes the impedance slightly. Even R11 is incredibly subtle. 7,700 out of 8,000 Centaurs have it in place, so it should be considered the accepted value.
You may hear someone swear that a “Gold Horsie” Centaur sounds different than the later Silver ones—but the truth is that if a person were to A/B a Gold with a Silver, any tonal differences they heard would be due to component tolerances and nothing more. They would be just as likely to hear the same difference between two Silvers or two Golds side by side.