Had the ESL amp.It was spectacular with a digital source.Fed by analog,it never had the magic.I understand that Roger uses digital as his source.I understand that there were problems with the Kilo-watt amps.I had read HPs' review and took a listen.My set-up required monos,so Roger set me up with mono'd ESLs.
I used mine with a tube pre (Terrasong).
I used mine with a tube pre (Terrasong).