The Sonist Concerto 4
The Sonist Concerto 3 ($3495/pair) is a favorite of Art Dudley's, who praised its "SET-friendly" nature (April 2009). The system I heard in the Sonist room at T.H.E. Show used the Concerto 4 ($5895/pair), which JA wrote about in his report from the 2011 Atlanta Axpona, The Concerto 4 is claimed to have a sensitivity of 97dB, 2dB higher than the Concerto 3, and the bass is claimed to extend 3Hz lower, to 27Hz. (When it comes to the extremes of sensitivity and bass extension, even small gains are hard to come by.) With a Cary 306 Pro SACD/CD player as the source, Increcable Acoustic Lab TIA216 integrated amp (300B-based), Acoustic Revive power conditioner, and Exakte cables, the sound was clean, open, and "fast" on percussion.
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