Hi, I looked at a marbass cmd12p mini combo. It sounded great and I think the price was ok $700 for what looked like a new bass amp (its second hand but looks cherry). I played my warwick thumb on it (I play rock, blues, starting to learn jazz) and it sounded great - even nicer tone thank my GK rig tho no side by side comparison was possible as test was at his house. My problem is that with gain or the vintage amp sound turned up more than 12 o clock there was big hiss = white noise. The guy said it was a bad circuit from the wall socket but....? If I turned my bass down the hiss went lower (its active pups), but I think the point is to buy something I can play loud with a range of sounds. Hooked up an external cab and the same problem. Am I expecting too much? Anyone with a new markbass have a comment on this? Is the price reasonable. Thanks in advance for your help.