After a quite long searching period, finally I got my tube, the Brimar CV4024 and GE 12B4A. Actually, I was looking for RCA 12B4A or Tungsol. But got no luck for now 🙁 But this two pairs of tubes should be good. Now I need to find a good pair of EL34 to start my EL34 SE project.

I have ordered custom DIY Output Transformer and some overrated Power Transformer (around 2A for both 12B4A, around 1.5A for both CV4024, and around 5A for EL34). We’ll see how this setup will perform ;)  It takes some times before I can finish this project. So many things to do, but so little night to be spent. I wish I can have over 30 hours every day, not just 24.