I am still a little new to the whole amp scene. I have had my bass guitar for about 2 years now and I still only have my little 15 watt amp that came with it. I am going to buy a new one but i am a little confused by the terms they use. Can someone describe to me what the differences are between the following. This will help not only me, but anyone else who is confused. Thank you! Preamp Power amp Head Cabinet Stack This might seem like a really stupid post but it would really help me out. If there is any additional info i might need please post it. The only thing i know about are combo amps, but when I need something a little better I will need to learn what all those terms mean. Thanks again!