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In Reply to: RE: Adjusting Plate Voltage on Preamp Output Tubes posted by casouza on June 30, 2009 at 19:15:01
I have used 6sn7's at 210V, and 15mA with a CCS for about 4V on the grid. They sounded great. The pre I was using at the time put out about 10V max. You also need to consider the amp's input requirement. There is no definite setting for voltages without a necessary input / output voltage requirement. You can even drive a 300B with a 6sn7 with the right approach.
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