Which ISO version do you have? Is the duplex receptacle located on the back side of the unit? If it is that version,it should only be used for digital, transport and preamp use.Joe made a prototype version that had the duplex receptacles on top of the unit but did not make very many. THe prototype was larger,probably weighed in at 30 pounds easy. The Iso I have has a large isolation transformer inside but i don't know the VA rating. My Iso is 5"tall, 7"wide and 11" deep and weighs 22 pounds. I hope this helps. I can give you Joe's email address if that would help. Good luck
rogue audio m150 owners
I have rogue audio m150 monos that are a little over a year old , today I measured my power tubes on a tube tester and I was suprised that my tubes were barely testing "good" . they seemed to have lost most of there power. the tubes are EH kt88s . is this normal ? how many hours is average for this type of tube ? I am new to the world of tubes and I thought I would get 3-5000 hours of good use before needed replacement. Also, have any m150 owners tried any different brands of tubes? Is there one that stands out from the others? please help ! thanks and happy listening!