OK, I'm looking for your thoughts, comments, rationale, etc. Consider the two basic topologies below. They are one side of a complementary symmetric design (I wanted the image to be small so both sides not included). The left side uses a folded cascode (seen in Borbely, McIntosh, Mark Levinson, etc. products); the right side does not (seen in Leach, SAE, Bryston, etc. designs). Is either inherently "better" than the other as configured here (yes, I know there are other things you can do to enhance performance to both - like make Q1 & Q2 JFETs, add a cascode Q4, replace R3 with a constant current sink, etc. ). Assuming the same devices, same bias points, same compensation, same output stage, etc.?
How does the distortion spectra change (notice I'm NOT asking does one have lower THD than the other)? Maybe you folks with simulators have already played around with such a question.
Well, what do you think?
mlloyd1
How does the distortion spectra change (notice I'm NOT asking does one have lower THD than the other)? Maybe you folks with simulators have already played around with such a question.
Well, what do you think?
mlloyd1