Im gonna be getting a new amp fairly soon, but needed some advice. At the mo im using a 10 watt marshall guitar amp, its crap, dont know why i've had it for so long. Basically, when buying an amp, does it HAVE to be bass specific? Reason im asking is i've found a nice marshall cab for £229, its a marshall AVT-412B. Also, i've been looking at an SWR LA 15 100 watt combo, has anyone ever used this amp? All advice is appreciated.