Subject: Mobile
Manufacturer: Calyx

Introduction: Improving Portable Sound

The Calyx PaT is very small USB DAC and headphone amp that can be used with PCs and mobile devices, offering the possibility of better sound from just about any digital source. So how does it sound? Let’s find out!

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The PaT is a very interesting little device, to be sure. It rather resembles a large domino and weighs less than 1 ounce thanks to an ultra-light aluminum construction. It requires no battery or power source other than its micro USB connection, yet it provides sufficient power (0.8 V output) for in-ear monitors and efficient headphones through its 3.5mm headphone jack. Inside is a proprietary mix of DAC and amplifier circuitry, and like other products produced by Calyx, a Korean company with little presence in the United States, there is the promise of a dedication to great sound. Did Calyx pull it off with the diminutive PaT?

Improving Portable Sound

Outboard DACs and headphone amplifiers for computers and mobile devices are nothing new, with recent products like AudioQuest’s Dragonfly a prime example in the portable USB DAC market (though it offers no mobile support). When I first heard about the PaT during CES it was still in the prototype stage, but I was interested because of the Calyx name if nothing else, as I already owned the Calyx M DAP and had been quite honestly blown away by the sound.

So what need might I have for the interestingly-named PaT (pronounced "paat", meaning "bean" in reference to the small size), which is itself a DAC that requires another device to play music files? It wasn’t until I had the opportunity to speak with Calyx president Seungmok Yi during CES (via video chat as I couldn’t attend the show) that I started realize that this could be a compelling product, not just for the $99 price tag - a bargain for an audiophile product - but because of how versatile the PaT can be. You don't have to identify as an "audiophile" to appreciate the clearer and more detailed sound of a good DAC, especially when so many of us simply haven't heard one (especially on mobile devices).

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Continue reading our review of the Calyx PaT USB DAC and headphone amp!!