Trafomatic RIAA network. Any good?

[DF96]

Last time I checked JFETs were more like triodes, not really a current source. If you want a transconductance device (like a pentode) then either use a JFET cascode or a degenerated BJT.

 

[PRR]

Is it? The frequency dependent load never allows full swing at high frequencies as it controls the gain. Overload performance cannot be equal.

If you run a "flat" load, yes you get full swing to HF. But then you will run it through a passive high-cut. The signal OUT of that hi-cut will have less swing.

The result is essentially the same either way.

 

[RajkoM]

And another from forum member Wavebourn

http://www.diyaudio.com/forums/tubes-valves/178425-linearity.html#post2386328

My buddy made a modified version of this RIAA premap.
Sounds nice.
He used C3G and 6E5P tubes. First he tried WOT version, but had problems in bass region, as I recall.

 

[JordiMB]

Thanks for schematic and link !