@randybrinkman: Some ARC owners get defensive about their favorite brand of electronics, but your experience is not atypical. The ARC decision to not fuse their output tubes---using :"sacrificial" parts in their place---leads to amp repairs being required every time a tube goes bad. And output tubes in ARC amps going bad is a frequent occurrence (1,000 hours in typical); the tubes are driven hard. That amplifier design is akin to building a car which, when a tire blows, the car's suspension is taken out with it.
