I received Freya+ this morning
I skipped JJ stock tubes and inserted Nos Amperex 6sn7gtb in gain stage and Sylvania 6sn7gtb in buffer stage.
After running demagnetization tracks twice( 6min each) on Freya and Jot R, I started listening to Capricio Italian (Tchaikovsky) directed by Bernstein.
Wow, Freya with Jot R sounds much better than Jot R only with more relaxed and nuanced details but with minimal loss of transparency
While it sounds slightly thin with Jot R only.
Old Jazz recording by Benny Goodman sounds more relaxed with less hot edge from Freya and Jot R.
My digital source is Dave and HMS.
I use 20ft Purist Audio Design balanced cable between Dave and Freya and 6ft Synergistic Research balanced cable between Freya and Jot R.
I still have several choice of tube rolling with Sylvania vt231, RCA gray glass 6sn7gt and all quad Syl 6sn7 gtb.
Audio depends on personal preference, but Freya fitted with Nos tubes and Jot R sounds much more musical to my ears than Jot R only with overall nuanced presentation.
Although I had enjoyed fast and exciting sound out of Sr1a driven by Jot R for the last three months, I keep going back to 009s driven by Kgsshv Carbon amp to get more relaxed sound.
With Freya and Jot R, Sr1a move halfway between Jot R only and 009s with relaxed presentation.
I will also apply Freya to Kgsshv Carbon amp later today to find its effect on sound of 009s.
Out of curiosity, I am driving HD 800s out of Rca output of Freya using "Hosa TPR-257" adapter bought from Amazon.Wow, Freya+ is also a killer amp for HD 800s.
I had driven HD 800s by headphone output of Dave and HMS.
It sounds transparent but with one note bass.
But with Freya in the chain after Dave, HD 800s sounds almost perfect with nice soundstage, clean details and full and textured bass.