Question: Could you use an EQ stomp box to EQ the preamp signal on an amplifier by using the effects loop? I'm thinking of picking up a Portaflex 350, but it doesn't have a graphic EQ, which I use a lot on my B2r to fix my sound in different rooms. I have an EQ pedal, but I'm guessing it wouldn't be the same in my pedal board as the graphic EQ built into amps that have them. I'm ignorant on the amp effects loop...does it come after the preamp? I thought I'd read people bypassing the preamp with something like an Eden WTDI, but never worked out the order of things.