I have an Ashdown 220 Touring combo that I picked up late last year from MF. It's seen minimal use as I took off on an overseas thing shortly after buying it, but it was gigged before I left and it works like a champ. A few weeks ago, on night #2 of a 2-nighter, it developed a sudden loss of output during the first set. Very low volume, with almost zero low end - this is the signal coming from the DI as well as the speaker. Not having much time in between sets, we just went straight into the soundguy's DI and bailed on the amp. I spent the week trying to replicate the problem at home, and it worked fine. The next weekend, it had no issues. Incidentally, that FOH guy likes to mic the cab, so there was nothing plugged into the direct out on the amp. I also started placing my fx (using a Zoom B3 at the moment) in front of the amp rather than in the loop. Weekend #3, same thing happens... Dies during set 1, on night number 2 of a three-nighter this time. Same issue - very low output, huge loss of low end, affecting the DI as much as what's coming out the speaker. I'm using a Fender American Deluxe J V, active mode, bridge pickup favoured, with flat mids and treble, and slight boost of the bass. Original N3 pickups, not set exceptionally close to the strings I'd say (they could probably come up a bit). Zoom B3 for some compression and drive - pretty close to unity gain, maybe a touch louder at times. I'm not pumping huge modelled-SVT low end into the amp or anything... I'm plugging into the high-gain input on the amp for more grit out of those tubes, as per the manual's suggestion. Anyone else have this kind of problem with these amps and have a possible diagnosis? Bad preamp tube? Driver error? Something else I should be looking at? I've also emailed Ashdown twice about it and warranty info and gotten no response so far - anyone got a better way to get hold of them? Or know who distributes Ashdown in Canada now?