RMAF 2010

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Dynaudio - Wadia - Octave

Perhaps the best sound I heard at RMAF was in the large room on the mezzanine shared by Dynaudio, XLO, and Wadia. The Dynaudio Confidence C4s ($20,900/pair), which I first reviewed">http://www.stereophile.com/floorloudspeakers/794/">reviewed in March 2003, were sounding as good as I remember them sounding in my own room, perhaps even better. The rest of the system was obviously high-class: a Wadia 971 CD transport ($17,950) fed Wadia's Series 9 Decoding computer ($33,450, comprising the 931 controller and dual-mono 922 DACs), which in turn fed Octave MRE130 tubed monoblocks from Germany ($16,000/pair) sitting on Grand Prix amp stands. Cabling was all by XLO. The 130W Octave amplifiers use two pairs of KT88s in push-pull and the wideband output transformer has a single tap. The amp can also use 6550s or EL34s, and an accessory "black box" increases the B+ storage capacity.


The Peachtree iDAC

Peachtree's David Solomon, seen here accosting Stereophile's Stephen Mejias (right) in the hotel's coffee bar, was in ebullient mode. He's holding Peachtree Audio's new idAC ($999), which combines the usual 24/192kHz S/PDIF inputs with a 24/96-capable USB input and an iPod dock that, like the Peachtree iDecco amplifier that is favorably reviewed by Art Dudley in our December 2010 issue, takes the audio data from the iPod in digital form. The iDAC uses the latest version of ESS's 32-bit Sabre32 D/A chip.


Audio Design from Jan Didden & Bob Cordell

DIY hi-fi used to be an important aspect of audio magazine content 30 and more years ago, but these days it has migrated almost completely to the Internet, with just Ed Dell's AudioXpress magazine still waving the roll-your-own flag in print. Sharing a stand at RMAF were two of the Internet's most notable DIY engineers, Jan Didden from Holland (left) and Bob Cordell from New Jersey (right), and both were venturing into the print medium. Bob had advance copies of his new tome Designing Audio Power Amplifiers for sale, which I will be reviewing in Stereophile early in the New Year. Jan had the first volume of his new bookzine Linear">http://www.linearaudio.net">Linear Audio, which has articles on audio design from Bob, as well as Doug Self, Joachim Gerhardt, Nelson Pass, Siegfried Linkwitz, and many others. But if you have any interest at all in the nuts and bolts of audio design, don't wait for my reviews of these books; check them out for yourself. There's audiophile gold within their pages!


Revel & Mark Levinson

One of my two best sounds at RMAF was from Revel's Ultima Salon2 speakers ($22,000/pair), which have been favorites of mine since Larry">http://www.stereophile.com/floorloudspeakers/608revel">Larry Greenhill's review appeared in the June 2008 issue of Stereophile. At RMAF, the Revels were being driven by Mark Levinson No.53 monoblocks ($25,000/pair), which in turn were being fed straight from the variable output of a Mark Levinson No.512 SACD player ($15,000). Cabling was all-Transparent. The superbly stable soundstaging extended beyond the physical positions of the speakers, the tonal balance was one of the most neutral I heard at the Show, and the bass was both extended and defined. I would have stayed listening for longer, but the Show only had 30 minutes more to run and I had two more rooms to visit.


Synergistic's Black ART

When I reported in our report from the 2009 RMAF that I perceived a degradation when Ted Denney of cable manufacturer Synergistic Research removed his tiny ART devices from the room, it triggered a debate that raged not just in the comments following that report but also in our website forum right up to today. The fact is that these small metal bowls are too small to have a significant effect on the acoustics of a room at frequencies below 10kHz or so, yet they seem to improve the accuracy and stability of stereo imaging and even tighten up the sounds of bass instruments. It is a mystery, therefore, how these devices can work. I have conjectured that perhaps they have an effect on the listener’s state of mind rather than the acoustics, but if so, then I don’t comprehend how that effect can be both repeatable and demonstrable. Whatever they do—if they do anything, that is—therefore, I wasn’t sure what to expect when I went into my final room at the 2010 RMAF, the Synergistic room.
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