Tubes in a SE100

[bigman12583]

One of my tubes in my SE100 (pre amp) has become microphonic so i wanted to replace the one that was bad of course but it got me thinking should i replace all the 12az7 with " high gain" ones or keep the factory specs? i reached out to Suhr and they said regular Chinese 12ax7 were spec. So would it help the sound to go with "high gain" or not. Cheers

 

[fusedbrain]

That circuit has plenty of gain. No need to source " high gain" 12ax7's.
Also, most 12ax7's labeled "HG" are high grade / low noise. Not "high gain"
Go with Chinese 12ax7b's as per Suhr's recommendation.
If you find the amp a little to sizzly / bright, substitute a JJ in V1.

 

[RockyStar]

Tubes are like women...even though they are the same they are all different. Find one you like and roll with it.

 

[skullfxr]

Personally I would order a few different ones and roll them through.