out of interest, how loud would this make a 4 ohm 1X15 Cab? Having looking at the German manual on the Hughes and Kettner website it says 25 Watts, but it's hard to know what to expect from 25 Watts of tube power. I know it's a difficult to say how loud, but would it hold it's own with a fairly quiet band, or would it need a separate power amp for that?