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Follow-up question

You wrote, "The output would be taken at the junction of the CCS and the cathodes of the 6SN7s. You would have a few hoops to jump through to set up the bias on the 6SN7s, but it seems very doable."

Where is the float resistor in this topology, below the "bottom" of the CCS (in series with the CCS to ground, as I proposed above) or in parallel with the CCS, such that only the float resistor is connected to audio ground? (That actually seems like the only way to go, now I think about it more.) Sounds like you might be saying that the latter is correct, to connect the float resistor to the cathode(s), AND the CCS to the cathode. Thus the CCS is in series in the circuit, as you say. Do I have that right?

Need a discrete CCS for every cathode?


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