Computer Audio Reviews

Has Serinus been demoted? You might well ask. This month, instead of reviewing a $58,000 stereo amplifier, I'm tackling a $599 powered loudspeaker system.

Truth be told, I'm always on the lookout for products that deliver outstanding sound at bargain prices. And since I maintain in my living room a modestly priced system built around powered speakers—this in addition to the far costlier system in my dedicated listening room—it's an easy fit for me to evaluate low-priced products in a real-world context.

Jim Austin briefly discusses MQA in his review of the Explorer² in this issue, but a more complete description of MQA can be found in an article posted on Stereophile's website at the end of 2014.

MQA involves two fundamental concepts, discussed in a paper presented to the Audio Engineering Society in October 2014, the first responsible for a potential improvement in sound quality, the second responsible for a large reduction in the bandwidth required for storage and streaming of high-resolution files...

The 2015 T.H.E. Show in Southern California clashed with my having to be in the office to ship our August issue to the printer, so I wasn't able to attend. But in devouring the online coverage on www.stereophile.com and its sister sites, on InnerFidelity.com I found a report by Tyll Hertsens about two new hi-rez portable players that made their debuts at T.H.E. Show: Questyle Audio Technology's QP1 ($599) and QP1R ($899).

There are dozens of music-playback programs for computers, touchpads, and smartphones, ranging from Amarra, Audirvana, JRiver, Pure Music, and VLC, which manage libraries or work with library software, to programs that are integrated with a specific distribution service: Pandora, Spotify, Tidal, and, of course, iTunes. Still others, such as Sonos, are integrated with a dedicated hardware product.

Back in the summer of 2009, USB-connected D/A processors that could operate at sample rates greater than 48kHz were rare. Ayre Acoustics had just released its groundbreaking QB-9, one of the first DACs to use Gordon Rankin's Streamlength code for Texas Instruments' TAS1020 USB 1.1 receiver chip. Streamlength allowed the chip to operate in the sonically beneficial asynchronous mode, where the PC sourcing the audio data is slaved to the DAC. But high-performance, USB-connected DACs like the Ayre were also relatively expensive back then, so in the January 2010 issue of Stereophile I reviewed a pair of soundcards from major computer manufacturer ASUS , the Xonar Essence ST and STX, which, at $200, offered a much more cost-effective means of playing hi-rez files on a PC.

Am I the only one who values content and convenience over sound quality?

There. I've said it. I am not an audiophile; ie, someone who's in love with recorded sound for its own sake. The search for ideal sound can leave a person burned out and broke.

No history of the computer-audio marketplace could be complete without some mention of High Resolution Technologies, the California company whose Music Streamer was, in 2009, the first perfectionist-quality USB digital-to-analog converter to sell for as little as $99. One could argue that HRT's entire business model has contributed to shaping our attitudes toward the hobby: Because digital-audio technology continues to evolve at such a rapid pace, HRT has introduced a succession of newer and ever more effective Music Streamers, occasionally to the obsolescence of their predecessors; yet because those products have all been so affordable—remarkably and laudably so, given their thoroughly American provenance—we tend not to mind.