I'm sorry to hear about your amp. I owned one and used it for four years without issue. Over 20yrs I have owned much of their gear and only had one failure (335 amp) that was fixed under warranty. I have spoken at length with the ML sales rep. and know their gear is built and 100% tested in their Shelton Con. facility. Their reliability test lab is very similar in nature to what I worked in doing military electronics.
It might be worth your while to push the issue with A.C. and ask them to share the repair cost. That being said I understand the "load" you are carrying, many of us have experienced similar situations.
I hope things get better and you enjoy a merry xmas with family and friends.
