Hey people, i need a little advice. I have been used to a smallish amp size...90--150w ...Im wanting to buy a head and cab, but am a little confused as to what power i need. I will hopefully soon be playing live so need something that can cope. I have roughly £500 dont know what the xchange rate is?? (but would spend a little more). I wont be playing huge venues so nothing too big. Also if i got a decent size head could i go into the PA. Please explain. Me lost when it comes to serious bass amplification!!!?? Thanks girls/guys..