OK, I recently re-stringed my Dad's bass, and decided I want to pick up bass. BUt I need an amp.

Affordable=Under $400
...When you decide to wake up..
Gallien-Krueger Backline 115 should be around that, if not the 112 definately is.
Go for a Backline from Gallien Krueger, really worth the money.
I play a backline 600 head trough a 4X10 cab and it sounds amazing and funky.
Butt I'm sure the combo backline's are f***ing amazing two, it's really quality for your money