I have the Dialogue preamp going into a pair of Khartago/Kismet monos. I kept reading about how the Focals are so lean on bass but the 948s sound wonderful with this setup and have plenty of bass. Haven't noticed any hissing either.
After about a year I started trying different tubes. So far I've tried the Brimar and Gold Lions but it felt like a lot of detail disappeared. I have Sylvanias in there now and I like those the best. Curious to know how the EVO 400 would sound.