Simplistic NJFET RIAA

[AndrewT]

Originally Posted by Salas

it really takes off when the second stage is starting to get pushed as a result.

do you mean as the output peaks approach rail voltage?

[Salas]

Not really, a few volts Pk-Pk are enough to produce 1% THD with high input capacitance JFETS and low degeneration (Rs) we use here for high gain and low noise reasons.

[ra7]

Salas, do you have any ideas for a balanced phono stage?

[Salas]

You would just need to rearrange in diff amp mode the whole thing. 3dB more noise, but you can double up on input fets for MC that noise counts.

[atupi]

Any opinions about this capacitor RARE!!! 0.047uF 200V PIO Capacitors K40Y-9 Lot of 10 pcs. | eBay
for interstage connection ?

[merlin el mago]

For interstage can be good, for RIAA NO. I use FT-3.

[Milos P.]

I used Russian PIO 47nF(K42-U2) for RIAA but matched them to less than 0.5% with LCR meter. If you can match them, you could use them. The sound you may or may not like, for me , those in the direct signal path are a bit too much colored, bypassing them with good PP might sound interesting.

[Salas]

They are a bit dark PIO but smooth. Like Jensen but without the accent. They love Teflon bypass. Add BIG subjective anecdotal IMHO non scientific caution sign of course.

[Milos P.]

I'm still playing with my RIAA.The last mod is that I changed R1/10R/2W to 5R.
Like it very much and

Originally Posted by Salas

Add BIG subjective anecdotal IMHO non scientific caution sign of course.

[Salas]

You doubled the reg's CCS current to hot-rod you mean?