I have had a number of problems with keyboards over the years, but never had a failure at the gig (yet). However, I am often concerned as to what I would do. I have recorded all the accompaniments for the songs I do, and carry them on my iPhone, loaded in BackTrax. Plugging my iPhone into my PA system, I could then sing along to these tracks in the event of a total failure.

However, when I started using just the onboard speakers of my Pa900 for small jobs, I wondered what I would do. The Mackie SRM150 is a great solution, and I now carry that with me whether I use it or not.

What precautions do you take?