I don't think you need to find JFETs anymore to build a good phantom powered transformer out microphone.
There are opamps(with fet inputs) that you can use with a good circuit design that do not need any selection.
You do need a good transformer.
You can also build nice transformerless circuits as well.
After all the discussions on the web about microphones over the years
Same old copy the old stuff Instead take what is good from the old stuff and add the good from the newer devices.
discuss
There are opamps(with fet inputs) that you can use with a good circuit design that do not need any selection.
You do need a good transformer.
You can also build nice transformerless circuits as well.
After all the discussions on the web about microphones over the years
Same old copy the old stuff Instead take what is good from the old stuff and add the good from the newer devices.
discuss