I had a SET and I sold it before I got my M3s. I really wish I still had it and I might replace it some day. It was beautiful, and used they are not too expensive. I can have my big tube amp modded by the manufacturer with an option to use the pentode tubes as triodes(with less power output). I am thinking of doing it because I have it mated with the 3s for late night bed room listening. And it will be fun.

I am also thinking about adding a little sub to the bedroom mix.

M3 and
M80