The F7 is a very unique power amplifier, a two-stage push-pull JFET/MOSFET topology with fewer parts than any First Watt amplifier to date and incorporating a very interesting balance of very low negative voltage feedback and a little bit of positive current feedback to give an astonishing measure of control over reactive loudspeaker loads.
In case you haven’t noticed, I enjoy amplifiers with some personality. They don’t
have to measure perfect, they just have to sound good. This is a very simple
little Class A amplifier with lots of personality, and I hope you enjoy it as I do.
Nelson Pass