Little bit of upheaval recently in the tube market with PSVane Acme.
Grant fidelity droped them in favor of the newer LinLai brand. No idea how LinLai compares to the old PSVane Acmes and I am not sure where you can get the PSVane Acmes any more.
Elrog has an 845 that I hear is very good though I have no personal experience. Might be worth looking at though it is not modestly priced.
KRs are wonderful but are off spec. They have a 1.0amp filament current vs. a 3.25amp which is the standard. Check with your amp manufacturer before ordering these as they normally aren't a drop in replacement for an 845. There are a few exceptions like Art Audio's Carissa or Quartets.
Sino China's are inexpensive and would not be a step up vs. the Shuguangs.
Grant fidelity droped them in favor of the newer LinLai brand. No idea how LinLai compares to the old PSVane Acmes and I am not sure where you can get the PSVane Acmes any more.
Elrog has an 845 that I hear is very good though I have no personal experience. Might be worth looking at though it is not modestly priced.
KRs are wonderful but are off spec. They have a 1.0amp filament current vs. a 3.25amp which is the standard. Check with your amp manufacturer before ordering these as they normally aren't a drop in replacement for an 845. There are a few exceptions like Art Audio's Carissa or Quartets.
Sino China's are inexpensive and would not be a step up vs. the Shuguangs.