Agree with several here. The Schiit electronics are nice for the money, but they are going to be on the harsh/sterile side. I was actually quite impressed with the Primuluna equipment for tube (and I'm not a tube fan).
Lot's of choices for rolling out tubes. For the 12au7, PSVANE if you want the most highest resolution and neutral tubes manufactured today (best modern manufactured tube in my opinion). PSVANE makes EL34 tubes also.
Or go towards something more romantic like NOS such as Amperex or others.
Some people recommend trying KT120 or KT150 to push up the power. I have limited listening, but my ears tell me that these higher power tubes will tend to be shouty and have some grain. Definitely not as sweet as the KT88 or EL34.
Lot's of choices for rolling out tubes. For the 12au7, PSVANE if you want the most highest resolution and neutral tubes manufactured today (best modern manufactured tube in my opinion). PSVANE makes EL34 tubes also.
Or go towards something more romantic like NOS such as Amperex or others.
Some people recommend trying KT120 or KT150 to push up the power. I have limited listening, but my ears tell me that these higher power tubes will tend to be shouty and have some grain. Definitely not as sweet as the KT88 or EL34.