My 30 years of experience as an audiophile leads me to conclude that imaging, like any other sonic attribute, is a product of many circuit design decisions, not just whether tubes or transistors are used. I've heard tube electronics yield the razor sharp images often attributed to transistors, and transistor electronics display the softly rounded images that tubes are famous for. This is especially true of the most current designs. I think we could easily dispense with such generalizations, but I doubt that this will happen anytime soon.
