Kuoppis, I've heard the Wilson Alexia's in a treated room with a full lineup of ARC amps including the Ref 250's and Ref 5SE. The ARC amps are on the lean/transparent side with a slightly forward treble presentation. I agree with Keith's comments that the warmer, more harmonically rich Vac amps would be a better match with the S series. And from Myles feedback, the CJ Gat and Art amps also have good synergy.
I've also heard the S3 on about 3 occasions in different systems. When I heard the S3’s, the improvement in midrange clarity and freedom stood out and was impressive, though ultimately I found the lack of deep bass and a perception of slightly less resolution/texture in the bass unsatisfying (compared to the S5’s). Together with the prominent midrange I felt the S3’s were not as well balanced top to bottom or as satisfying as the S5’s, though taken by itself, the update to the midrange enclosure seems very successful.
Btw, the S5's also have a separate midrange enclosure. Magico describe the S5's midrange enclosure as "a substantial fabrication of alloy plate with no parallel walls, thus physically inert and essentially lacking internal resonant reflections". I asked Martin Colloms about the difference between the S3's polycarbonate enclosure and the S5's alloy enclosure to which he replied - "Customers can become to obsessed with small manufacturing changes, some of these are not improvements per se for that design, but are introduced to ease manufacturing issues." According to the NRC, the S5 has the lowest level of THD they ever measured.
I've also heard the S3 on about 3 occasions in different systems. When I heard the S3’s, the improvement in midrange clarity and freedom stood out and was impressive, though ultimately I found the lack of deep bass and a perception of slightly less resolution/texture in the bass unsatisfying (compared to the S5’s). Together with the prominent midrange I felt the S3’s were not as well balanced top to bottom or as satisfying as the S5’s, though taken by itself, the update to the midrange enclosure seems very successful.
Btw, the S5's also have a separate midrange enclosure. Magico describe the S5's midrange enclosure as "a substantial fabrication of alloy plate with no parallel walls, thus physically inert and essentially lacking internal resonant reflections". I asked Martin Colloms about the difference between the S3's polycarbonate enclosure and the S5's alloy enclosure to which he replied - "Customers can become to obsessed with small manufacturing changes, some of these are not improvements per se for that design, but are introduced to ease manufacturing issues." According to the NRC, the S5 has the lowest level of THD they ever measured.