You will find it out reading its manual.
1- send and return = your guitar enters your amp(input), get out through send and goes to any effects, then comes back through return and go to the poweramp section of your amp then to speakers.
2- A power in should be like if you have another amp(head) or mp1(hey you have it), when you plug it there it turns off input of your amp so it'd be this way = guitar to mp1 to power in to speakers.This way you can use your amp's power(signal won't pass through your amp's controls) to listen to any other gear you have.
But like I said if POWER IN = RETURN so you just have an effects loop and if you put mp1 there your guitar signal will always pass through your amp's controls, no matter that A/B box.So if you set an awesome clean sound with your amp controls, when you press the A/B box that clean tone will pass through your mp-1.Awesome clean + mp1 distortion = MASS.
The only way to use both separate would be plugging your guitar into an A/B box and sending each signal to your amp and mp1.Then both(amp and mp1) to a poweramp + cabnet.
This way A/B box will choose which signal(amp or mp1) will be sent to poweramp + cabnet.
Best solution = Buy a poweramp to your mp1, ada poweramps are super cheap on evilbay, buy a 1X12 cab(or whatever cab you want).Split your guitar with an A/B box and send one signal to your amp(clean tone) and the other one to your mp1 set(distortion).
You just need an A/B box + ada poweramp(cheap as hell) + 1X12 cab(cheap too)
Hope it helped, if Fender called an loop return by power in....................................sue them lol
First of all, thanks alot for the time, i really appreciate it!
Now, let me tell you exactly what happens when i plug in whatever
and you tell me what do i need to call those jacks (return or power in).
When i plug a guitar into the regular IN jack and another guitar to the
jack called PWR IN, i get no guitar #1 and only guitar #2 is on (regular
IN cancelled) and the controls don't do anything (plugged straight to the
When i plug a guitar into the regular IN and take another cable and
plug it from the PRE OUT to the PWR IN, i get regular effect as if my
guitar was connected only to the regular IN with nothing more.
From what i understand, the PWR IN is a jack that connects me to the
power amp and to the speaker without the amp's preamp.
The PRE OUT is from the preamp before it passes the power amp section.
Anyway, i found a way that my plan WILL work.
It will work if both the A/B and the HUB on my diagram will be both A/B
switches, BUT it's stupid to have to kick two switches to get from
clean to distortion, so what i need is a A/B that has one switch that
controls two channels at the same time (2 INs and 4 OUTs) which i don't
think i will ever find...and eventualy i will have to spend alot of time
building it myself.
I think it will look kind of silly if i would buy another power amp and cab
and use my big 2x12 fender for it's preamp only...