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More than a decade ago, Data Conversion Systems, aka dCS, released the Elgar Plus DAC, Purcell upsampler, and Verdi SACD/CD transport, for a total price of $34,000. In 2009 came the Scarlatti—a stack of four components for $80,000, also available individually (see my August 2009 review). The latest variation on the English company's theme are the four Vivaldi components, launched at the end of 2012 for a total price of $108,496.

In my November 2013 column, I looked at the NuForce AVP-18 multichannel preamplifier-processor ($1095) and the exaSound e28 multichannel DAC ($3299), each of which offers fresh options in its category that break with the predictability of mainstream products. That predictability is the result of market analysis that supposedly tells manufacturers which features users want most. However, it's just as true that users can buy and choose among only those components and features already offered. Many of us are more peculiar in our demands—what's generally offered doesn't always fit our needs. This month, I look at an unusual pre-pro and a multichannel digital equalizer at opposite ends of the price spectrum.

If you travel along Route 20 in upstate New York, you might see the hitchhiker my family and I refer to as the Old Soldier—so called because this slightly built man, whose age could be anywhere from 55 to 90, is always dressed in a military uniform from some long-ago campaign. When we first saw him, his topcoat suggested a recent return from Chateau-Thierry; in more recent sightings, the old man has taken to wearing the trim khakis and sharply creased legionnaire cap of the late 1940s—chronological zigzagging that made me think, at first, that this traveler was aging in reverse.

The Ultimate Headphone Guide is now available for purchase in our online store. Over five hundred headphones and headphone amps are listed alongside big, beautiful pictures and essential specifications. Click here for more details!

"J-10? What's an integrated amplifier?"

It was fall 2000. I'd just begun working at Stereophile, and I clearly remember sheepishly, innocently putting this question to former senior editor Jonathan Scull.

I think the question confused him—not because he didn't know the answer, but because the answer seemed so obvious, the question itself should have been unnecessary. How could anyone not know what an integrated amplifier is? I might as well have asked, "What's a song?"

Whereas the Pass Labs preamplifiers are designed by Wayne Colburn, the power amplifiers are the work of company founder and high-end audio veteran Nelson Pass, who even lays out his own circuit boards. The X-model amplifiers, beginning with the X1000 in 1998, were the first implementation of Nelson Pass's patented Supersymmetry topology (see "Nelson Pass on the Patents of Pass"). The XA series, which debuted in 2002, combined Supersymmetry with the single-ended class-A operation of the Aleph series. The XA.5 models offer detail improvements over the XAs.

I've loved the neutral, detailed, involving sound of Sonus Faber loudspeakers for as long as they've been available in the US. Most of my listening to them, however, has been at audio shows, and during a visit to Audio Research Corporation in 2012. (Since 2008, both ARC and Sonus Faber have been owned by the Italian firm Fine Sounds SpA, and since then ARC has used speakers made by SF, as well as by Wilson Audio and Magnepan, in the design of their electronics. Fine Sounds also owns 100% of Wadia, McIntosh, and Sumiko.)