usb dacs

I've reviewed a number of portable headphone amps over the years, but they just took the analog output of a phone or MP3 player and made it sound better. Ideally, you want to totally bypass the player's digital converters, but up until recently that was a very expensive proposition. The V-Moda Vamp Verza cuts the price to less than half, and works with iPhones, iPads, and iPods, as well as Androids and computers. I'm really impressed with the little Vamp Verza's sound.

The look and concept were designed by V-Moda's Val Kolton in Milan, Italy, … Read more

Regular readers of this blog know we're living in the golden age of desktop audio. The speakers just keep getting better and better, and digital converters from the likes of Schiit Audio, AudioQuest, Hifiman, FiiO, and HRT have all made computers sound better than ever.

Now along comes the Meridian Explorer, a sleek, extruded aluminum converter with line- and headphone-level 3.5mm output jacks and a USB input. The line-level output internally bypasses the headphone amp and volume control. Meridian is best known for its ultra-high-end digital converters that sell for thousands of dollars -- the Explorer is their … Read more

Desktop digital-to-analog converters keep getting better and better, and the Micromega MyDac is a fine example of the breed. The 24-bit/192-kHz MyDac has three digital inputs: coaxial, optical, and USB, all selectable via the thumb wheel control on the front panel. The stereo RCA analog outputs can feed either your powered speakers or power amp. I was pleased to see the MyDac has a built-in power supply, so it doesn't use a wall wart. Micromega will soon release a matching headphone amp, which I hope to review here with the MyDac. Available in black or white finishes, its … Read more

High Resolution Technologies makes some of the very best and most affordable digital-to-analog converters on the market. The company's newest model, the MicroStreamer, is a tiny thing, just 2.5 inches by 1.2 inches by 0.4 inch, and since it's USB-powered it doesn't have a power supply or require batteries. It works as an external sound card for computers, tablets, and some smartphones. It's also a high-quality headphone amplifier. It was designed in the U.S., and the little guy's circuitboard's components are mounted in Southern California. The aluminum case is made … Read more

The Woo Audio WA7 Fireflies is one of the most beautiful audio products I've ever used. For my money it approaches a level of design grace comparable to that of Apple products. The 5-inch cube headphone amplifier has two vacuum tubes protected by a thick glass cover. The WA7 also has a built-in 32-bit/192kHz USB digital-to-analog converter (DAC) and lots of custom-made parts, including dedicated nickel alloy output transformers. There's a 6.3mm jack for home-style headphones, and a 3.5mm jack for portable ones. That's noteworthy, as few headphone amps have both jack sizes. The … Read more

Schiit Audio's very first product, the Asgard headphone amplifier, left me shaken and stirred back in 2010. It sold for $249, looked and sounded amazing, and to top things off, it was made in the U.S. -- not just assembled here. Most of the Asgard's parts are sourced from U.S. companies.

The Asgard is still in company's product line, and it's still $249. But Schiit has grown since then, and now offers a full line of more expensive headphone amps and USB digital-to-analog converters (DACs) -- which is great. But the company's most recent offerings sell for just $99 each! The Magni headphone amp and the Modi DAC are also made in America, and they sound spectacular. … Read more

Late last year I raved about the ADL by Furutech Cruise USB digital-to-analog headphone amplifier, so when the company sent over the new Esprit desktop digital-to-analog converter, I was eager to see what it could do.

I had the 2.3-inch-by-5.8-inch-by-7.4-inch component on my desktop for a few months and I was a little concerned that I was starting to take it for granted. It sounded so utterly natural that I listened to it a lot longer than I needed to write a review, and that's always a good sign. I ran it with my Emotiva airmotiv … Read more

Some "portable" headphone amplifiers aren't all that small, but the Firestone Audio Fireye Mini is downright tiny.

It's just 1.5 inches by 1 inch by 0.5 inch, and the soft-rubber-shelled amp weighs almost nothing, so you can hang it off your iPod, iPad, iPhone or any device with a 3.5mm headphone output. Plugging in a headphone turns the Mini on and lights a bright blue LED, unplugging turns the amp off. Charge the Mini via the USB connection and it'll play for up to 24 hours. It's available in green, gray, purple, red, and white.

The Mini is no giant-killer, but it definitely bumped up the detail and resolution of my Monster Turbine Copper, Ultimate Ears UE-4, and vPulse in-ear headphones.… Read more

The AudioQuest DragonFly is a USB-powered (it doesn't use batteries or an external power supply) digital-to-analog converter. I usually need some time to get a handle on the sound of a component, but within minutes of plugging in the tiny $249 DAC I knew exactly what made it so special. It sounds clear and clean, so there's less standing between the music and my ears.

The DragonFly is a bona fide audio component, designed by Gordon Rankin, a man known in audiophile circles as a great tube electronics engineer, but Rankin is also a computer audio guy. He's one of the few DAC designers with equal depth of knowledge in analog and digital audio technology.… Read more