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Emotiva Stealth DAC

Francisco Licon

Listening to my records one night, I received an email from Susan Johnson asking if I would be willing to review the Emotiva Stealth DC-1. Would I ever! Last year I tried the Emotiva USP-1 preamp and UPA-200 amp in my system and I have been very happy with the combination. Needless to say I was very curious to see and hear this reference piece from Emotiva.

DACs

Arcam rPac Headphone DAC/Amp and rBlink Bluetooth DAC

Brian Alvarez

Everywhere you look established specialist audio companies are getting into the headphone and lifestyle market. These products are smaller, more affordable, and easier to use than traditional hi-fi. They appeal to a new generation of music lovers looking for products that fit their more mobile and computer centric lifestyles. I'm the ideal case study. I spend hours throughout my day listening to music on headphones at my desk. Streaming RDIO, watching videos on YouTube, editing videos, etc. While the built in headphone output on my Mac book Air is good. I've been using external USB Dacs for some time to drive bigger less sensitive headphones. Arcam sent us two of their R series boxes to check out, the rPac USB headphone DAC/amp and the rBlink Bluetooth DAC.

DACs

Benchmark DAC2 HGC Review

Rick Schmidt

I think it's fair to refer to the Benchmark DAC2 HGC as a DAC since that is its official title, or a headphone amplifier but the owner's manual refers to it as a 'Reference Stereo Preamplifier'. Whatever you call it, this little box does a lot. I reviewed it mostly as a DAC but tried out the preamp and headphone functions as well.

DACs

Meridian Explorer USB DAC

Stephen Hornbrook and Chris Heinonen

Computer audio is all the rage now, with many people moving their entire digital collections to music servers, and the laptop taking the place of the CD player in many systems. The technologies behind USB DACs have evolved rapidly to where the interface is now on the same level as Coaxial or Optical interfaces. One area that hasn't been addressed as well is the portable audio market, as most USB DACs are rack-sized components that require a wall power supply. This is certainly not a convenient option for those of us that want high-resolution audio on the go.

DACs

NAD M51 Direct Digital DAC

John E. Johnson, Jr.

 

Most audio component manufacturers have a DAC in their product lineup, and NAD is no exception. However, the NAD M51 is unusual in that it takes the incoming digital PCM bitstream and converts it directly to a PWM bitstream, which is then fed directly to the output. The idea has been around for about a decade, but the technology for implementing it was not fast enough in those early days. Now, with modern technology and techniques, NAD has produced what they call a "Direct Digital DAC", where the digital signal does not go through digital to analog conversion in the normal sense, but converted to PWM at 844 kHz sampling, with 35 bit word length. As you will see with the bench tests, the results are quite amazing, and the price is very affordable.

DACs