Thanks Tony and OS for your advices!
Hopefully I saved several video trans from CRT TV and monitors, like 2SA1360, BF869, BF870, BF87x etc.
They seem to be as good as KSC3503 and KSA1381 that, I think, are actually the VAS reference trans. I have to try them.
I have also some authentic Philips BD139, BD140 and 2SC4793, 2SA1837 for drivers for use with ST TIP35C and 36C.
Hopefully I saved several video trans from CRT TV and monitors, like 2SA1360, BF869, BF870, BF87x etc.
They seem to be as good as KSC3503 and KSA1381 that, I think, are actually the VAS reference trans. I have to try them.
I have also some authentic Philips BD139, BD140 and 2SC4793, 2SA1837 for drivers for use with ST TIP35C and 36C.
I precise that my diy audio hobby is tube amplifiers. My favorite is EL84 SE, more dynamic than 6V6 or EL34 SE amps. I'm working now on a EL84 push pull amp more powerful than SE.
I'm curious about the sound quality of my future diy solid state project amps like ESP3A or Circlophone compared to tube amps.
I'm curious about the sound quality of my future diy solid state project amps like ESP3A or Circlophone compared to tube amps.
Looking forward to seeing your listening comparison report of the P3A amp with the EL84 tube amp!
Maybe stupid question, filter-miller caps are both capacitors C4 and C6 or one of them. I hope Cornell Dubilier MICA is good choice. To keep 100pF unchanged or go to 68pF value?
C4 is the miller cap. C6 is to address oscillation from the CFP output stage that can sometimes occur.
Mica or ceramic C0G/NP0 are fine for these positions. I wouldn't experiment with a lower value for C4 unless you have a scope to monitor the output to ensure it's not causing problems. Also consider adding a capacitive load when doing this testing.
Mica or ceramic C0G/NP0 are fine for these positions. I wouldn't experiment with a lower value for C4 unless you have a scope to monitor the output to ensure it's not causing problems. Also consider adding a capacitive load when doing this testing.