Digital Processor Reviews

It had been a while since I'd done any serious, critical listening through headphones. That changed when Editor Jim Austin asked if I wanted to review the iFi Audio ZEN Signature Set ($599). Figuring I could use more Zen in my life, I agreed.

UK-based iFi Audio, which operates under the auspices of the Abbington Global Group, has released several compact products in its ZEN series: DACs, headphone amps, a Bluetooth receiver, and a network streamer.

"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?"

In the summer of 2021, MoFi Distribution's Jonathan Derda emailed me about the South Korean HiFi Rose brand. "This brand strikes me as being the spiritual successor to the original SlimDevices Transporter and Squeezebox Touch," he wrote. "We're all really excited about it."

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.

Imagine an electronic magic wand you could wave at your listening room's acoustical problems to make them disappear. The Cambridge Signal Technologies SigTech TF 1120 may be just such an alchemical device. Its efficacy depends on the nature of the acoustical warts in your listening environment. Operating solely within the digital domain, the SigTech device can perform both drastic and subtle frequency-response and time-domain corrections that are beyond the scope of analog-based units. While the TF 1120 is expensive, in some situations it may still be the most cost-effective way of coping with acoustical gremlins. Is it the solution to your problems? Perhaps.

We hold these truths to be self-evident, that all men are created equal.

A great concept—sound enough to serve as the foundation for an independent democratic nation.

Yet what's sound in one sphere doesn't necessarily apply to sound in another, namely the rooms in which our systems reside. As much as we audiophiles may wish to declare our independence from room resonances, image smearing from first-order reflections, slap echo, and every other environmental and speaker-related factor that can handicap system performance, no mere declaration will make it so. Not all rooms—and not all components—are created equal.