Anyone know anything about this amp? I bought it a while back, and very nice it is too (i'm not interested in high end, it would be wasted on me). Thing is, i cant find any info on it ANYWHERE. Didn't come with a manual, and i can't be bothered sending off for one in the US. From what i can tell, its a higher model than a 400, having recording source selector, A/B speakers inputs, and all tone controls. Anyone?