i have a fender frontman 212r (http://www.musiciansfriend.com/product/Fender-Frontman-212R-100W-2x12-Guitar-Combo-Amp?sku=481601) and it has 2 jacks that i dont know what to do with them. one says "pre out" and another says "pwr in". my first though was i could put a preamp or power amp, but im not sure. could i put an amp head on there and basically use my fender combo as a cab?
It might be the Send and Return for the effects loop.
Do you have the manual? Cuz that prolly tells you exactly wat they are.
it says something about an effects loop, but i just take my rp350 with my guitar into it and then out to my amp. could i use my rp in these slots?