Bo Deadly
Well-known member
Or it's not needed because the FET is operated at such a low level being connected (almost) directly to the inverting input.abbey road d enfer said:... and the FET has no distortion compensation on its gate; both tend to indicate that low distortion was not a major concern in the design.
This reminds me of this EDN article:
Op Amp And Two JFETs Form A Voltage-Controlled Amplifier
which is missing figures but the circuit looks like this: