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.