RMAF 2011

It's the perfect name for a preamp, I thought. Grand Pre, if not Grand Prix, has a certain ring to it. The first upmarket product from the company that has made a name for itself with its high-performance iDecco, iNova, and iDac, the Grand Pre will be priced at $3000. It combines the high-resolution ESS 9018 DAC chip with a buffer stage based on 12AX7 tubes, and offers both analog and digital inputs, including a 24/192k-capable USB input. Peachtree's David Solomon, shown in my photo,was demming the Grand Pre with a Simaudio Moon amplifier driving B&W 802 Diamond speakers, using Pure Music on his laptop to send it USB data.

I review Empirical Audio's pricey Off-Ramp 4 asynchronous USB–AES/EBU converter with its Monolith 1 battery supply in the forthcoming December issue and was impressed by the quality of its engineering as well as by its sound quality. At RMAF, Empirical's Steve Nugent showed me the Overdrive Ultra D/A converter ($10,000–$15,000), housed in a bronze case, which is well-damped. The DAC uses the Off-Ramp 4 circuit as its USB front-end and features just one analog stage following the I/V converter. Unusually, this uses a bipolar emitter follower instead of the common FET buffer. The digital circuitry is powered from the Monolith, feeding 12 Hynes-type regulators, though Steve Nugent feels that the analog stage sounds better when powered from a conventional AC-derived supply. The volume control in the DAC is elegant in that it reduces the reference voltage to the DAC chip, thus maintaining full digital resolution. There are two choices for full-scale output voltage.

When Michael Fremer reviewed the 710 amplifier from Swiss manufacturer Soulution last August, his praise for the sound was surpassed by mine for the measured performance. "The Soulution 710 is definitely one of the best-measuring amplifiers I have encountered, " I wrote, "Color me impressed."

Denver retailer Apex Audio, which is continuing in the tradition of the late John Barnes' Audio Unlimited store, was using the Soulution 700 monoblocks ($130,000/pair), which each offer 430W into ohms, 860W into 4 ohms, were being use to drive Focal's Stella Utopia EM speakers ($90,000/pair), with their electromagnet-powered woofers via Tara Labs cables.

I was intimately familiar with the Sonus Faber Guarneri Evolution speakers $20,000/pair), with their matching stands ($2000/pair), in one of Listen-Up's rooms at RMAF, having measured them two days before I left for Denver. (Art Dudley is reviewing this little jewel of a speaker in the January 2012 issue of Stereophile). At RMAF, they were being bi-amped with four PrimaLuna DiaLogue 7 tubed monoblocks ($5499/pair) with AudioQuest cable, Preamp was the PrimaLuna DiaLogue 3 ($2699) and while a PrimaLuna ProLogue Classic CD player ($2999) could be seen. this had been broken in shipping and CDs were being played on a Simaudio player.

From my listening notes, as I auditioned the classic Chet Atkins-Mark Knopfler gittar-pickin' duet "There'll be Some Changes Made": "maybe a little too rich-balanced but a good sense of pace and impressive low-frequency extension for such a small speaker...unaccompanied female voice had a beautifully liquid quality with space space space!"

It was around this point of the show that I started to feel weak and dizzy, overwhelmed by the size of RMAF and disappointed by the lack of truly affordable gear. Thank goodness for Gold Sound. The Colorado dealer had pieced together not one, not two, but five affordable, audiophile systems priced under $5000.

There was a lot of buzz over the new high-performance, highly versatile Invicta DAC/preamp ($3395) from Resonessence Labs. The Invicta handles all resolutions up to 24-bit/192kHz from all of its inputs, including asynchronous USB 2.0.