I was wondering if you can use the preamp out or power amp in to connect a graphic equalizer and or use either for an effects loop? If not what is the best course of action to connect a graphic eq so it will affect the amp it's self and bass. Instead of having and eq pedal in my pedal chain changing my basses sound before it hits my amp. also is it possible to get something like an effects loop using the preamp out poweramp in? Any help would be great!