Schiit offering LISST "tubes" for SAGA & FREYA pre-amps

I had the Freya in my system with 4 different sets of tubes, and i was getting a lot of noise and hum in "tube mode". I was able to get most of the hum out, but i would still get random static and noise. Z reviews on youtube did a review of the Freya, and he talked about the feedback through the tubes. He came across as this being a positive feature that gave it the "tube sound". 

I will put these on my radar for my Freya.Curious how it would be to mix a pair of Liists and a Pair of Tubes in the output and gain stages..Liist in the gain and Tubes in the output..also the other way around?Or,where would ya'll try a pair of Liists out first?Gain or Output?

Yeah I'm curious about this also. My buddy says the front tubes are more important. Anyone else know?

I had 2 matched new Tung Sol 6SN7GTBs already when I received the Freya, so I ordered 2 more and stuck ’em all in. There is amazingly low noise from the tube stage in the Freya in my rig (surprising since I read most of the 10,418 comments in "headfi"), and that’s with testing for that by putting my ear next to a horn loaded tweeter that certainly will reveal hiss. I didn’t think the stock Freya tubes were so bad particularly, but I swapped them anyway because I’m a mindless crowd follower. I often swap output modes around when listening, although the gain jump in tube mode has to be allowed for, and that, for me, keeps the tubes honest (or something). I would get the Lisst tube replacement things if they glowed, but I doubt they glow at all under normal circumstances…and they would die in a thermonuclear electromagnetic pulse, so there’s that.