Thanks for filling me in. The reason that i asked is that "old style" E-I transformers are less susceptible to line noise and do a better job of "filtration" as compared to an equivalent toriodal design. If Bryston was still using the "old time" design, i could see why they might have a slight advantage over other "modern" amps. As it is, i almost have to wonder if ANYONE is using "old style" iron core transformers anymore ???? Sean
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PS... sorry for taking the thread so far off course.....