Stereophile writers have reviewed three versions of Sonus Faber's stand-mounted, two-way loudspeaker, the Guarneri: Martin Colloms on the original Guarneri Homage, in 1994; Michael Fremer on the Memento edition, in 2007; and Art Dudley on the Evolution, in 2012. The Guarneri has always been an expensive speaker—$9400/pair with matching stands in 1995, $15,000 with stands in 2007, $20,000/pair plus $2000 for the stands in 2012—but its prices have been related to its build quality and appearance, both of which have always been superb. Now we have the Guarneri Tradition, for $15,900/pair, including stands.

Merging Technologies' original NADAC Multichannel-8 ($11,500) is an impressive device. (NADAC is an acronym for network-attached digital-to-analog converter.) It has eight channels of high-resolution D/A conversion, and two more for its front-panel headphone jack; a cutting-edge Ravenna Ethernet input (based on the AES67 Audio over Internet Protocol, or AoIP); and, to my delight, a real volume-control knob on the front.

Earlier this week, we posted a video blog with PS Audio's founder and CEO Paul McGowan giving Jana Dagdagan and me a post-CES tour around the Boulder, Colorado company's factory. Following the tour, I sat down with Paul in Music Room One and in a wide-ranging conversation, we talked about amplifiers and loudspeakers, DACs and audio systems, and the state of high-end audio.

Five years ago, I reviewed the Alumine loudspeaker from Stenheim, a Swiss company founded by four former employees of Goldmund SA. I noted the Alumine's surprisingly "high sensitivity and easy drivability," praised its performance for being "clean but neither sterile nor colorless," and admired, in my geeky way, the coated cellulose-fiber cone of its 5" midbass driver, which is made in Chartrettes, France—just southeast of Paris—by a company called PHL.