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05-30-2020, 02:31 PM
Hey
Note that the SUS effect is SUBTLE and may be swamped by what Power Scaling can do for you.
As a cathode-biased amp, SUS-2 can be applied around the output stage. It can also be applied to any preamp stage that might clip, however, in the case of the Champ topology only the second stage qualifies and just barely. The two 12AX7 stages can only make a mild overdrive at best, and that will produce way more drive than the 6V6 needs to produce full output. With the MV / Drive Compensation control directly ahead of the 6V6, the situation can be tamed.
Best to remove the feedback loop if present.
Have fun
Note that the SUS effect is SUBTLE and may be swamped by what Power Scaling can do for you.
As a cathode-biased amp, SUS-2 can be applied around the output stage. It can also be applied to any preamp stage that might clip, however, in the case of the Champ topology only the second stage qualifies and just barely. The two 12AX7 stages can only make a mild overdrive at best, and that will produce way more drive than the 6V6 needs to produce full output. With the MV / Drive Compensation control directly ahead of the 6V6, the situation can be tamed.
Best to remove the feedback loop if present.
Have fun
