I hope I'm posting this in the right place. I'm looking for something I can use to practice with headphones. I am planning on getting a job in the library as a monitor in our MIDI Lab when I head back to school and I would love to practice there while I'm working. Getting paid to practice, sounds good right? Ide like to be able to incorporate my ditto looper into the mix as well. I'm not really sure what it is that I'm looking for whether it be an amp or an audio interface. I would like to be able to use it without having to have it connected to a computer. Also, I am looking for something fairly portable that would fit in my backpack or in a gig bag with my basses. Any suggestions? Thanks.