Digital Processor Reviews

"Resolution can be a tricky thing when it comes to digital," my friend Michael Lavorgna recently told me. "Too much, and my focus shifts from music to sound; too little, and I become less engaged." Lavorgna, a visual artist and proprietor of the online audio-and-music publication Twittering Machines, is one of my favorite people to talk to about records, books, art, and hi-fi. We've been doing it for almost 20 years.

Since the plague arrived, several of my closest audio friends have been chattering and bugging me constantly, not about masks, vaccines, Trump, or Biden but about Bruno Putzeys's digital-to-analog converter, the Mola Mola Tambaqui. They've been sending emails and texts like pesky kids:

"Herbie! Have you tried the Mola Mola? Come on man, what's taking you so long? Is Putzeys's DAC better than my MSB? Or the dCS Bartók? Or the HoloAudio May?"

Stereophile often subjects products that have been reviewed to further coverage: sometimes because there was an aspect of performance that needed further investigation; other times because there was a controversial finding. Three recent followups concerned the Ayre Acoustics EX-8 2.0 Integrated Hub amplifier that Ken Micallef reviewed in the November 2021 issue; the Accuphase DG-68 Digital Voicing Equalizer that Jason Victor Serinus reviewed in August 2021; and the Zesto Leto Ultra II line preamplifier that Ken Micallef reviewed in February 2021.

Playlists embody who we are. We use musical affinities to understand (or at least categorize) others, not only as evidence of their aesthetic discernment but also of their emotional and political affiliations, which amount to an entire worldview. In other words, the database of favorite music that we carry around in our brains is no laughing matter. So, one of the most unexpected—and rewarding—things that can happen in music fandom is a complete and sudden inversion of one's beliefs. Which brings me to the perennially touchy subject of Steely Dan, a band that cleaves the ranks of listeners like a gold-plated katana.

Adoption of DSP-based speaker-and-room correction in home theater—a parallel universe to audiophilia—is almost universal. It's easy to understand why. Home theater matured in the digital age. Its fans were expected to install several loudspeakers in a full-range setup that included at least one speaker—the subwoofer(s)—that functioned exclusively in the problematic bass region. Setup issues were intimidating.

I was aware that Canadian company Verity Audio, founded in 1995, made loudspeakers, like the Sarastro II that Fred Kaplan reviewed in May 2009. But when Jason Victor Serinus and I attended the 2018 Rocky Mountain Audio Fest, we were both impressed by the sound of an all-Verity system that featured Verity's Monsalvat AMP-60 power amplifier. Jason Victor Serinus favorably reviewed the AMP-60 in May 2019; I didn't have to be asked twice, therefore, if I wanted to review Verity's Montsalvat DAC/PRE (see later).

I have owned the SE version of the Bricasti M1 D/A converter for several years. It's my reference DAC. When, recently, I became aware of the availability of the factory-installed MDx Processor Board upgrade, I packed up the M1SE and sent it off to the Bricasti factory, which is in Shirley, Massachusetts, northwest of Boston. The factory-installed MDx upgrade costs $1000—a lot less than the $10,000 it costs today to buy a new M1SE with the MDx board.