It's official. I am a nerd! I couldn't resist snapping the interior of Theta's amplifier, which takes an audio input as PCM digital and transforms it into PWM digital without ever changing it back to analog until the music arrives at the speaker terminals.
Neil Sinclair gave me a tour of Theta’s new multi-channel amp, which keeps the signal exclusively in the digital domain from the S/PDIF inputs to the PWM output stage, the latter said to operate at the super-high frequency of 1MHz. Designed by veteran amp engineer Dave Reich, what is in effect a powerDAC—that’s what it says on the output-stage printed circuit boards—will find its way, I hope, into some two-channel products in due course.
JA already blogged about the Ultima Salon2 demo we attended yesterday, but I just had to second his praise with an additional rave: These large speakers are incredibly light on their feet. Yes, the bass <I>was</I> impressive, and, yes, they sounded fabulous on vocals, but for me, it was their ability to change rhythmic directions on a tack-head that was most impressive.
PS Audio's Paul McGowan was leaning so comfortably on these nice new AC Power Plants that it wasn't until my second visit that I realized the products carried the Ethereal label, the first fruits of a collaboration between these two companies. In addition to the 1500W Power Plant with its inbuilt harmonic distortion analysers, Paul also has the new surge-protected Power Center tucked under his arm. He looks pretty happy.
I finally got to see the new Cary Cinema II processor ($3000) that had been whispered about at the 2005 CEDIA. Sleek but prodigious, it has balanced analog and digital inputs in addition to single-ended analog, optical and coaxial digital inputs and a true analog bypass 7.1 input. There's balanced and unbalanced outputs as well as analog/digital outputs for a second zone. But get this: it is also Dolby-HD approved!
Slim Devices' Patrick Cosson and OnPR's Marivi Lerdo-de-Tejada pose with the California company's high-end, $1999 Transporter network music player, after granting me a hands-on session with it. The Transporter's Dynamic Feedback control knob is amazing—choose a function and it becomes a silky-smooth volume pot, an indexed rotary switch, or a velocity-sensitive controller. Better yet, each function feels absolutely "real."
Less flashy than the amplifier internals I blogged about earlier, but still enormously impressive, was this rack of Classé. Classé's Dave Nauber told me it was the first time the company had displayed their curved-profile components in these high-quality racks and that the installers were going nuts over them. They <I>do</I> do a restrained elegance.
While we have been salivating for months in anticipation of the impending release of the floorstander, the CS3.7 that Wes Phillips blogged about on Thursday, Thiel teamed a pair of them with 3 of the new SCS4 small LCR speakers (and a pair of SS-1 subs) in one of the most musical setups at the show. The SCS4 utilizes a single coaxial driver in a remarkably rigid and resonance-free enclosure. The front panel is an aluminum casting and the other panels are doubly-laminated 1" MDF. As a single source, this can be oriented vertically (as shown) or horizontally as a center channel without phase interactions. At only $1000 each, this matched sweetly with the CS3.7s.
They say that guys are visually stimulated, so I must be normal. Walking by Classé's booth, I saw this naked CA-5200 (5 x 200W; $8000). <I>Hubba hubba!</I>
So what does an audio guy discover at CEDIA? A turntable, of course. At the head of Sumiko's array of Pro-Ject turntables was their most elegant and impressive one yet. The RM-10 looks like a serious and grown-up RM-9 with a platform base and double-thick platter. At $2500, Pro-Ject's most expensive model yet, evoked buy-me-now urges in this lapsed vinyist. I understand that Michael Fremer has a review already in the hopper for our November issue.