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Compared with the usual bargain-bin satellite speaker, USD 150 is a fair-to-slightly-strong price for a pair of Boston Acoustics Micro 90x, though not an outright steal. Recorded sales average about USD 199, while other examples have appeared around USD 80–95, so the asking price makes sense if these are clean, tested, and complete; it is high for rough or incomplete speakers.
They remain appealing little monitors: sturdy die-cast aluminum cabinets, magnetic shielding, an articulate aluminum-dome tweeter, and surprisingly capable midrange from the compact woofer. They suit a desk, small stereo, or surround system and can handle ordinary amplification comfortably. Check that both tweeters and woofers play evenly, the surrounds are intact, and the original grilles or mounting hardware are included. At USD 150, verified condition matters, but a tidy working pair is still a worthwhile buy.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Boston Acoustics emerged in 1979 from the innovative spirit of America's Northeast audio scene, founded by Advent veterans Andy Kotsatos and Frank Reed in Lynnfield, Massachusetts. Drawing on their experience at pioneering firms like KLH and Advent, the duo established the company to craft high-quality loudspeakers that balanced engineering precision with musical fidelity. Their early flagship, the A70, quickly earned acclaim in the 1980s for its exceptional sound, setting a foundation rooted in MIT-level expertise and a commitment to superior design at accessible prices.
The brand focused primarily on speakers across diverse categories, including home bookshelf and floorstanding models, custom architectural installations, and robust car audio systems. They expanded into surround sound solutions for home theater and even ventured into compact computer speakers and outdoor options like the SoundWare series, while maintaining a core emphasis on transducers rather than amplifiers, turntables, or headphones.
Positioned as a mid-tier powerhouse, Boston Acoustics built a sterling reputation for value-driven performance that punched above its price, appealing to discerning audiophiles through dealer networks and later direct sales. Acquired by D&M Holdings in 2005 and integrated into Sound United by 2017, the brand's legacy endures among vintage collectors for its engineering excellence, though active production has ceased.
See all Boston Acoustics listings on RADAR.
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