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Thread: PAIA Stak In A Box Tube Preamp Kit Build.

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  1. #8
    GAStronomist DrNomis_44's Avatar
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    Update:

    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:

    Click image for larger version. 

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    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.

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