I've had mine for about a month as well pf500/115he. Used it at rehearsal and a gig and hasn't cut out yet. I'm gonna run it through a 4ohm 810 this week to see if it cuts out then. Cautiously optimistic. I'm wondering if the recently purchased ones have had the problem addressed. I've read through the entire thread and there doesn't seem to be any common denominator as to why they cut out. Oh well, I guess time will tell.