Depending on what year you began buying music, you may have amassed a rack of CDs, a teetering stack of cassettes, or a shelf of vinyl. It was usually kept close to the stereo, a cabinet full of expensive equipment with two tall speakers standing sentry.
Anyone coming of age in the current century, of course, knows music mostly as digital files, stashed on a smartphone or iPod or distant server. And that is forcing makers of audio equipment like Bose Corp. and Sonos Inc., both with substantial Massachusetts operations, to tune in to changing consumer behaviors more closely than ever before.

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***2 http://www.bostonglobe.com/ugc/comments/h/topic/uuid/c0a20ee8-56e8-11e2-884d-055e7b339a2f?offset=0&limit=25&sort=OLDEST_CREATE_DT ***Sadly, this means the days of true high fidelity are either waning or drawing to a close. I don't think these kids will ever know what volume on a home stereo is like. Audiophiles, sad day everywhere (although I am sure, for what they are, the devices described here are adequate). Home theater, with powered subwoofers etc may be the exception, but I am not sure how much these would be dedicated for music enjoyment. Plus MP3's are decidedly lacking in audio fidelity.