Maybe tube preamp

Thanks, Kali.  I had seen that unit.

Wolf:  Since you have experience with 6SN7 tubes, you may be able to provide some insight into something I am curious about:  How would you describe the difference in sound between 6SN7 tubes and the more popular 12AX7's ?

Ghost & Axe.  Thanks much for your valuable insights.  I am leaning toward Aric, but may take another look at Mapletree.

I do not know,but,Mike Moffet at Schiit says" I need to clarify that I am not a fan of 12A(any)7 tubes. The 12AU has bad curves, and although I have never used it the 12AT also suffers from curves far worse than the 6SN7/5692. The main application for 12AT7 tubes is audio circuits in shortwave transmitters and receivers where audio non-linearity and punch help intelligibility over weak, noisy, signals. For line level (not phono) tubes, the 6SN7 family just rules. 6DJ8 and 5670 are quieter, but this is useful for phono apps."

PS - wish I’d added this to my earlier post.

I am NOT saying there is anything wrong with Freya’s sound using quiet 6SN7 tubes (new production TungSols seem popular on HeadFi). Just that, for me, if I don’t need the gain that tubes provide, I am very happy with the sound when running it in JFET buffer mode. Other than the gain, I’ve not yet heard a huge sonic advantage using tubes. Small differences, yes, maybe. Again, that’s with the tubes I’ve tried. I also want to stress folks over on HeadFi are reporting much bigger changes going to tubes from passive mode and seem to strongly prefer tube mode.  Okay...done now.