The German Voxativ Ampeggio Signature by Schimmel
loudspeaker ($32,500/pair) was Stereophile
's surprise Product of 2011, wresting well-balanced sound from its single drive-unit. At the 2013 T.H.E. Show, designer Inès Adler showed her Ampeggio Duo ($100,000/pair), which still uses a single full-range drive-unit, but this time field-coilenergized and with a wooden cone, said to have the same mass as a conventional paper cone but 100x stiffer. The large, wide, piano-lacquered enclosure horn-loads the rear of the cone and the speaker is claimed to have a 3dB point of 25Hz. Driven by KR amplifications, the 100dB-sensitivity Ampeggio Duos produced the kick drum on Dire Straits' "Sultans of Swing" with surprising weight.