I purchased a Mark 5:25 combo back in April against my better judgement. I have not been happy with Mesa's increasing internal complexity combined with declining internal build quality for a long time, but I figured that since Randy sold Mesa to Gibson, I may as well get a Mesa amp before the quality declines any further. I have been busy with other things and usually mostly play unplugged these days, so the amp has not seen much in the way of playing time. Well, today, I put the amp in 25W mode on both channels for the first time and no sound whatsoever. I am not going open the amp up because it should be under warranty, but I should have known better than to purchase the amp. Hopefully, this problem will be sorted by Mesa quickly, but for those who thinking about purchasing a new modern Mesa amp, check all features upon arrival.