" is either wrong or a bad way to think of the situation, because:Ī. The phase inverter can use various circuits, and the gain of this position in the circuit can vary from less than 1 (split-load/cathodyne inverter by itself) to ~1/4 of Mu (long-tail pair, as used in most amps) to ~1/2 Mu (paraphase inverter, but just the first triode second should have "no gain" or roughly the same result as the long-tail when considering the effect of both triodes). Actual gain in the circuit is often a bit above half of these numbers, and depends on use in the circuit. They have a published spec Mu of 100 and 60, respectively. O Has a published spec current output of 10.0 milliamps (ten times that of the 12AX7 as a side note)" O Has a publishes spec current output of 1.2 milliamps An amp's tone has the biggest change when you try various tube in V1, but those expensive NOS tubes seem to have less impact on the amp's tone when you plug them in the phase inverter or output tube sockets. has the largest impact on your tone and gain but has less impact on your output distortion touch dynamics and output stage distortion than the phase inverter." I agree with some of his big-picture end results, but not the how/why of it occurring.ġ. There are some half-truths or incomplete information though in it.
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