Just a quick note to advise I have built up the amplifier with the two larger 650VA transformers as per the attached picture.
There is very little noise emanating from them. According to my iPhone NIOSH app. with the phone held up to the face of the amplifier and then at the listening position less than 1dB so inaudible above background at around 2ft.
Richard Lines
www.express-transformers.co.uk
sales@express-transformers.co.uk
01928 574491