Bought this second hand a few years ago, and it's all been going downhill for my wee combo in the last year. First problem was I would be playing away and suddenly the volume would drop drastically, so it was like it was barely on, you could just make out a noise but with no power behind it. Vector Desain Kaos. Could have the gain and volume up at say 10 o'clock and it sound as if it was barely at about 7. It would do this sporadically to begin with until it eventually just did this from the second I switched it on. Took it to my local music store who sent it away to get fixed. Got it back still wasn't working.