ive had a 3500 head for 2 years, love it, have had no problems. so about a month ago im talking to another bass player who says he has heard from a few people that their hartke heads just stopped working/died etc. soon after and for the past 5 or 6 gigs my sound just completely dies for a few minutes but comes back even through the direct out. i tested everything cables/basses etc. its got to be the head. anyone else have or hear of these problems. im about to go out and buy another, but dont want to spend the money if i dont have to.