• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Transition from guitar to hi-fi

Quite a lot depends on whar you are aiming for at the end. Soldering stuff to a PCB is the easy part. Planning the chassis, doing the metalwork, wiring for minimum hum, selecting the components ... those are to the things that make so much difference to the final product.
What are you shooting for?