They are exceptional. I heard them with Wadia 860 Ayre K1 and Ayre V1. The cable was Nordost SPM. Beautiful midrange and highs. Exceptional soundstage depth. The music was smooth and alive. The bass and dynamics were a little soft and lacking in extension, but I believe that to be due to the cable and/or amp selection. I have not heard a better loudspeaker and if there are some (possibly Soundlab), I think you will have to pay a lot more.
