I have a Plinius Sa250mkIV which I have been running for awhile. I had my first shut down this weekend. I normally run the amp for 4 to 10 hours in class A, decent volume with no problem. This is with Martin Logan CLS IIz speakers which are a difficult load. I changed to a Shunyata Sidewinder power cord based on a recommendation from an audio dealer in Chicago. This is the first time I ran it with this cord. After a 6 hour run time with no problems, left it running as I normally do (goes to AB after 30 minutes) and went to sleep. Next day, hit the button to go to class a and it shut down immediately. I found I had blown 2 fuses when I started it back up.. Changed the fuses, put the regular cord back on and no problem. Dont know if this is chance or what, but that cord will not go on again. If you are using an accessory power cord, you may want to check this. It cant hurt anyways. I emailed technical service in NZ when I thought I had a problem and they responded promptly. You might want to email them, I was very impressed with the quick response time. I am very happy with this amp and company, one of the best solid state I have ever heard. It is one of my 2 keeper amps, the other being Cary SLM-200 monos, the best tube amps I have ever heard or owned. Good luck with your quest, try contacting New Zealand. I beleive they will try to help you out based on my experience.
