Sorry I am a recording novice.
>Cool thanks. Cause If I connect an amp to my portastudio, its not powering from it right?
- correct
>Also, can the portastudio be used as an amp?
-No (as a mixer yes, nut not an amp)
>If I plug in my bass and with headphones can I record direct or do I need to mic up my amp?
- Yes you can record direct. It will sound different than micing your amp. Try them both and use the method you find most satisfying.