I love the Voskhod 6H6Pi/6N6P tube in my Sunrise III. Electro-Harmonix 12BH7 Gold Pin if I want more detail.
I also have an Electro-Harmonix 6H30Pi Gold Pin now (only tried in Ember) and a couple RCA 6SN7 Smoked glass.
Gonna a fun comparison!
Three amps enter, one amp leaves (and goes back to Jeremy).
I also plan to get a pair of the Garage1217 linear power supplies when those become available.