Hello All, I love my epifani ul502 and love the channel switching. however, it isn't the same as my vintage tube amp. Yet, i feel like I am missing something there as well. Has anyone tried a tube pedal effect or something like the nightwalker to give yourself that vintage boost in tone? Recommendations? Would I be better plugging something like this in the effects loop? I would think before the amp with the OD selector. thank u!