Originally Posted by justanoldmuso
my question is...in a in line jfet based preamp would it be easier to build than a op amp based one ? with simpler voltage supply schematic ?
The short answer is definitely, yes, as Triton have amply demonstrated. Their preamp uses just 9 electronic components and could have used just seven, and it uses the 48V directly as its power source. Extracting, isolating and regulating/stabilising power for OpAmps can be a bit of a faff and relatively much more complex and costly.

FYI, I've just looked very briefly at a Cloudlifter CL-1 teardown and what looks on it like a pair of OpAmps are actually 8-pin packages each containing a pair of discrete JFETs, so the principle is likely similar. Again no real power issues, though the FETs are 40V, so something needs to draw enough to keep the Vds below 40V.

Jazz relative beginner, starting at a much older age than was helpful.
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