John Atkinson

Erick Lichte was very impressed with the Marten Django XL loudspeaker when he reviewed it last September. The three-way Django costs $15,000/pair, but CES saw the debut of the two-way Django L, at a more affordable $9000/pair. A 1" Accuton tweeter is married to two 8" woofers and the sound on Peter Gabriel's "Don't Give Up" was much better-integrated than I would have expected.

I had auditioned the Estelon X-Diamond speakers ($65,000/pair) at the 2012 Newport Beach Show, but the room there was not allowing the speakers to sound at their best. Driven by top-of-the-line, class-A Vitus amplification, these speakers, which use the 1.2" Accuton inverted diamond-dome tweeter, along with a 7" Accuton ceramic-cone midrange unit and an 11" Accuton ceramic-cone woofer, sounded much better at CES, even though the dem room was one of the infamous split-level rooms at the Venetian.

Listening to the big MartinLogan CLX full-range electrostatics ($25,495/pair) at the June 2012 Newport Beach Show had been a high point for me, though they were being demmed in too large a room. At CES, the CLXes were in a smaller room, and were being supported by a pair of MartinLogan's Balanced Force 210 subwoofers. Amplification was by Cello and the source included Berkeley's Alpha DAC. I sat down to listen to a 176.4kHz file of Respighi orchestral music from Referenece Recordings, but sadly it was not possible to form much of an impression, due to the conversations competing with the music.

My photograph doesn't do justice to the lustrous blue finish or the immaculate interior construction, but Vandersteen's new M7-HPA power amplifier looks as gorgeous as the Vandersteen Model Seven and 5A loudspeakers with which it is intended to be used. As the HPA in its name implies, the M7-HPA provides a high-pass filtered output (>100Hz) to the upper-frequency drive-units of these two speakers, which have integral powered subwoofers. The amplifier uses a tube input stage and a two single-ended solid-state output amplifier stages operating in what Richard Vandersteen calls "push-push," all mounted with a sprung suspension and kept cool with a liquid cooling system. Price is projected to be between $30,000 and $40,000/pair.

Manhattan retailer/distributor Audio Arts was showing the Zellaton Grand loudspeaker ($39,750/pair). This combines a tweeter and two 7" mid-woofers using aluminum foil-faced rigid-foam diaphragms first developed in 1935 by Emil Podszus—which I had first seen and heard in the Pawel Ensemble minimonitors from 20 years ago—with a downward-firing woofer in a cabinet that is open to the rear.

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-coil–energized 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.

In a large, acoustically untreated basement room at the Flamingo, KEF's "Brand Ambassador" Johann Coorg, was getting superb sound from the same orange pair of Blade speakers ($30,000/pair) that he had demmed at last October's RMAF. Again using Parasound Halo preamp and monoblock power amps, Johann was playing files from J River Media Center running in a Windows environment on his MacBook Pro, courtesy of Parallels, to feed a Parasound Z•DAC. (That way, he could use the Mac's native USB2.0 driver.) Cabling was all WireWorld and AC was conditioned with a Torus transformer.