Sound Lab (and all true electrostatic speakers) are a difficult load for the previously mentioned reasons. However, there are tube amps that are very capable of driving them extremely well, Wolcott, Atmosphere and CAT being good examples.
Tube amp for "difficult" speakers,,,
I have a pair of Consequence Dynaudio, mk 2. They work well with my s-state 2x600 watts amp and sounds great esp at large volume levels. But I want to switch to tubes, and even triode if possible. Is good tube amplification unrealistic with these 83 db sensitivity speakers? I am probably not the only one with somewhat "difficult" speakers so all advice is welcome.