Greetings to the Community, I am starting a tube rolling thread for the Schiit Mjolnir2 headphone amp. If the community prefers I merge all this into the Lyr tube rolling thread, so be it. As the two amps are different, I thought a second thread made sense. I have the following tubes to play with in my amp: (in no special order) 1 - Schiit 6BZ7's 2 - Schiit LISST's 3 - Black Sable JJ Tesla E88CC 4 - Genalex Gold Lion E88CC 5 - Philips Miniwatt SQ E88CC 6 -AmpereX D-Getter 6922 7 - Mullard RTC 7308's It will take some time to work though all these and share my observations. I will be listening to jazz, "late night classical," and voice via HE-1000 headphones. iMac > Audirvana > Schiit Gungnir Multibit > Schiit Mjolnir2 > HiFi Man HE-1000 > EMOS (Ears Made of Stone). Let's see what comes of this!