Parasound had an amp (HCA 3500 I think) which was so dual mono that it even had 2 power cords and switches. This thing tipped the scales at 85 pounds and begged to be mono blocks at about 44 pounds each. What were they thinking? In these days of everyone using dual transformers, I feel that any new stereo amp that is going to weigh more than 50 pounds or so should be redesigned as mono pairs. If you need to ship a 90 pound amp with a bad channel back to the manufacturer, you'll wish it was a 45 pound mono. Much easier to pack and ship to say nothing of much cheaper.
