LATEST ADDITIONS

When I gave my Richard Heyser Memorial Lecture at last October's AES Convention, THX's Laurie Fincham was sitting in the audience. Afterwards, Laurie whetted my appetite for what the company would be presenting at CES: a patented non-switching power amplifier topology that would be as efficient as a class-D amplifier but without the side-effects that afflict such designs, high levels of radiated RF, for example. In the photo, Laurie is pointing to the power supply of the amplifier. DC is fed to two oscillators running at 25kHz, one generating a sinewave, the other a cosinewave, ie 90° out of phase with the sinewave. Each wave feeds a transconductance amplifier in the primary of a small transformer; the output of each secondary is rectified and summed to produce a high DC voltage which is then used to power the amplifier circuit. There are no storage capacitors in the circuit—it looks as if almost all the energy entering the supply is available as the final DC voltage! The new topology was developed by Fincham, Owen Jones (the twin brother of TAD's Andrew Jones) and Andrew Mason.

You either buy it or you don’t. That’s the way I felt coming out of the Bell House last week in Brooklyn after watching Norah Jones, guitarist Jim Campilongo, bassist Lee Alexander, drummer Dan Reiser and guitarist/singer Richard Julien—i.e. The Little Willies— do their thing.

Constellation brought their new Jetsons inspired Cygnus DAC to CES, shown here in the hands of VP of Engineering Peter Madnick. The DAC contains four 32/192 DACs in a stereo balanced configuration, with separate DACs used for the positive- and negative-going signals of the left and right channels.

Inputs include USB, SPDIF, AES and Toslink and it looks like they've dropped the CD transport that was included in the demo at last year's CES. Price should be around $20k.

Though labelled DAC-1, this new unit is also a digital preamp featuring 24/192 SPDIF, Toslink and USB. Priced at $995 and available sometime in March or April, it also includes a remote.

Based on the popular Oppo 93, Primare was displaying their universal player that will retail for $5495. It plays all the typical Oppo disc formats including 3D Blu-ray and has custom audio, video and power supply circuitry. The BD32 is a gorgeous-looking product and the photo does not do it justice.

Sporting USB (24/96), SPDIF and Toslink (24/192) inputs and a retail price of $299, the DAC15.2 also has a coaxial digital output if you wish to use it as a USB/Toslink to SPDIF converter. Clever.

Crystal Cable's first loudspeaker, the Arabesque, used a complex-shaped enclosure fabricated from glass panels. Three years later, the Dutch company showed the new Arabesque Mini ($25,000/pair plus $1000/pair for matching stands), which uses a small aluminum cabinet with the same "comma" cross-section as the glass speaker, a shape that confers advantages when it comes to controlling the inevitable air-space resonances. A beryllium-dome tweeter is coupled to a long-throw, 1" maximum excursion (presumably peak–peak) 6" woofer. Crystal specifies distortion as being <0.5% from 120Hz to 20kHz, though no spl is given for this specification.