Thanks a lot for reading... I'm going to be upgrading my amp this week and was hoping you guys had some advice on what direction to go. I was playing a Fender 400 Pro combo on top of an additional 1 X 15 KMD cab. Somebody bought my Fender 400 so I'll be left with just the 15. With a Tech 21 pre, what I had was probably just loud enough for my band and the type of gigs we play (we're really, REALLY loud). Since recently adding another guitar player I've really had to push it to the limit. I've thought about keeping the 15 and buying a really nice head for it... otherwise I can sell the 15 too and start from scratch. If I sell just the Fender, I'll have about a grand to spend. What would you guys do? I'm really leaning towards Ampeg right now. Also, I don't know anything about electronics. What do I need to know to determine how much wattage that 15 can handle? Thanks in advance for all your help.