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RE: I tossed the 6SN7s in my Preamp




The NOS 2C22/7193 tubes cost $5-8 each in their original military boxes, less than most modern alternatives. They are also plentiful as they were made in mass quantities for WWII radar systems.

As far as the diode bias being the cause of the improvement, I had the 2C22s in my system for a year before I did the diode bias mod, so that was not the reason they sounded better. The diode bias and CCS took them to an even higher level later, though.


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  • RE: I tossed the 6SN7s in my Preamp - Maxamillion 19:01:59 08/20/09 (0)

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