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One of the things that, it seems to me, separates headphone enthusiasts from traditional audiophiles is an interest in good inexpensive stuff, or devices with unusual utility. Think Koss Porta Pros or the Riva Turbo X. The Porta Pro has been delivering excellent sound quality for its very low $49 price for decades and for decades headphone enthusiasts have been praising their worth. And when the Riva Turbo X Bluetooth speaker showed up at CanJam a year or so ago, headphone hobbyists embraced it immediately as a great sounding portable speaker. These are cool little gadgets, and it seems to me headphone enthusiasts are more than willing to have a good hard look at them....no matter the cost.

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...

It may have started back in 2011, when the crowd at the Grammy Awards let out a collective "Who?" as Esperanza Spalding was named Best New Artist, an award almost everyone had thought would go straight to Justin Bieber. Spalding was the first jazz artist ever to win that award.

The resulting notoriety took the jazz bassist and singer, who'd lived almost entirely in the rather insular world of jazz, by surprise. A child prodigy who played violin at five, and soon after learned oboe and clarinet, Spalding sings in Portuguese, Spanish, and English, and became one of the youngest teachers in the history of her alma mater, Boston's prestigious Berklee College of Music.

Dramatis Personae:

bill, director of marketing for PS Audio

randy, amateur reviewer for a commercial audiophile website

dick, professional reviewer for an established audio magazine (not Stereophile)