I had a similar problem with my Stereomour II. It sat idle for quite a few months after moving to a new house. Finally got around to hooking it up to my Blumenstein Orcas and subs (2013 era) and it started to intermittently blow the fuse on start up. Searched the forums and tried a 1.6A slow-blow fuse. Problem solved. And damn the Bottlehead/Blumenstein combo sounds glorious just running off my iPhone. Wowza.