• 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.

signal chain for novice

just ordered my first tube head,
Epi Valve Jr.
my thought is to run this as a pre-amp into my fm212r. pretty sure i shouldnt go into the front but is there a good reason not to use the PWR IN jack of the efx loop?
also have a handmade attenuator on the way -small attic space gets loud(!)
any advice is much appreciated

quick edit: is there a proper way to use this set-up??? thanks