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Re: Anyone have any favorite 12sc7 to recommend to be used in a phonostage? -nt

Posted by Ron Oehlert on February 26, 2007 at 20:53:11:
Is this the particular tube type# specified for your Mapletree Audio Ultra 4A? Because it is a metal tube intended for ac/dc radios & has a single cathode common to a shared grid for both anodes = not easily implemented in typical 2-stage phono circuts & certrainly not swappable into existing circuts that were not designed for this specific tube type.