Here's a pic of the finished and fully-populated Stak-In-A-Box Tube Preamp PCB, I had a pic I took just after I started soldering parts on it, but the simcard it was on got corrupted:
Yes, that's a real Sovtek 12AX7WA/7025 tube on the Stak-In-A-Box PCB, it is used a lot in tube guitar amplifiers, like old Fenders, old Marshalls, and etc.
That larger IC on the left is part of the circuitry that generates the +42V DC for the tube, the other two smaller ICs on the right form part of the clean booster amp and the two cab simulator circuits.
I elected to use IC sockets to avoid any damage to the three ICs.
Last edited by DrNomis_44; 28-10-2025 at 07:26 PM.