CES 2014

The German ADAM company has been developing the idea of the Air Motion Transformer HF unit, originally developed by Dr. Oskar Heil. The latest version of their tweeter, the X-ART tweeter, is featured in the Mk.II version of the Tensor Beta loudspeaker ($25,000/pair), which was being demmed with Cary electronics. The X-ART tweeter is married to a folded-ribbon upper-midrange unit, a new lower midrange unit and two woofers, all mounted on a solid aluminum baffle. The enclosure is made from 1” and 2” MDF panels, extensively crossbraced. Interestingly, waffle-shaped inner panels are loosely filled with steel shot, which absorbs vibrational energy. The speaker is also supported on fluid-filled feet to further absorb vibration.

On first glimpse, Nola’s Carl Marchisotto appeared to be demming the same Concert Grand Reference Gold loudspeakers he had shown at the 2013 CES. However, those were the preproduction protypes and the 2014 show featured the production version. Costing the same $197,000/pair, the speaker features a new ribbon supertweeter taking the response up to 100kHz and two new Gold Technology woofers operating below 40Hz. Driven by an Audio Research Reference 75 stereo amplifier and an Audio Research Reference 10 preamp, with source two United Home Audio Tape decks running 15ips, 2-track analog tape and hooked up with Nordost Odin cabling, the sound in this room had an impressive, full-range sweep that usefully loosened up as the show progressed and the speakers/system broke in.

The Belgian Venture company introduced its Vidi speaker at CES. Costing $30,000/pair, the floorstanding, three-way Vidi speaker combines two 4" midrange units with a 1" tweeter and two 7" woofers, these mounted on the speaker’s sidewalls. All the drive-units use AGC (Abaca Graphite Composite) diaphragms. The crossover operates with first-order slopes at 250Hz and 3kHz and the speaker is specified as having a frequency range of 30Hz to 40kHz. Used fullrange but with an AW500 subwoofer also operating below 70Hz, the beautifully gloss-finished Vidis did a creditable job with the the live Bootleg Series recording of Bob Dylan’s "Desolation Row," played back from a laptop running the XX HighEnd software feeding digital data to a Weiss Medusa DAC. The opening up of the soundstage as the initially mono recording, made with a Nagra tape recorder, was spliced to the stereo backup tape when the Nagra ran out of tape, was delicious.

The Polar Vortex weather and its associated flight cancellations prevented Convergent Audio Technology’s Ken Stevens from reaching Las Vegas until the third day of the show. However, once he arrived, he set up a system featuring Vandersteen 5A Carbon speakers, connected by Stealth cables to his new JL5 Triode "Baby CAT" stereo power amplifier. This 100Wpc (8 ohms) amplifier costs $12,000 with amorphous core transformers and Black Gate capacitors, $10,000 with silicon-steel transformers. The circuit features what Ken calls "OptiBias"—Ken describes this as "somewhere between constant current and constant power"—which keeps the bias current of the output-stage KT120 tubes independent of fluctuations in the AC supply voltage. Those who feel tube amplifiers can’t rock hard in the bass should have experienced the Led Zeppelin track I auditioned in Ken’s room.

Is it any surprise Audio Consulting and Scaena, otherwise known as Switzerland meets South Florida, sounded excellent? From Audio Consulting, who were making their first show appearance since 2008, and is now sold direct from Nashville, we experienced numerous products. The first, the Audio Consulting MIPA (Mains Independent Power Amplifier) Silver Rock Toroidal amplifier, is available in stereo 30W ($45,000), mono 120W, and 30W/120W switchable ($52,000) configurations. A battery-driven, solid-state class-A switching amplifier, it has customizable inputs and outputs and is housed in a wood chassis.

Quasi-secreted in the front half of his father Dan’s room, Bret D’Agostino showed off the rethought aesthetics, better class-A power, and additional refinement of his new BSC 5 series. Available now are the M5 monoblocks ($28,500/pair), which replace the 100M monoblocks; S5 class-A stereo amplifier ($15,000); and optional amplifier Base 5 ($1600). Coming in March is the L5 line stage preamplifier ($14,500). Bret is responsible for the entire design, inside and out, which pushes the envelope of his original design topology. There was no way to audition the products, but I can only assume that they improve upon the sound of their predecessors, some which I enthused about last year at T.H.E. Show.

I found the combination of Jadis and Spendor totally magical. It certainly flattered a CD of a Rossini String Symphony with the warm and special sound that made former Stereophile editor turned publicist Jonathan Scull salivate over Jadis products when they first reached the US from France two decades ago, and impelled me to buy the DA-7 amplifier, a later incarnation of the Defy 7 amp that J10 reviewed.