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RE: My take on the Sophia Royal Princess 300B (and mine alone)

..having just..about 3 weeks ago..added the RP tubes to my chalice audio 'grail' SETs...i agree with your experience except i don't have the history with the other 300B tubes. my RPs replaced the previous Princess tube and i can say that the new version..RP..is better in every way. it certainly has taken the sound of my amps up another notch and then some. i have about 50 hrs on them so far and they should continue to mature. jeff day's recent review in 'positive feedback magazine'...which is a great comparison of the Sophia tubes...was the biggest factor in my buying the RP...


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