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Selling a stereo pair (left & right) of MK II LCR 750 THX bookshelf speakers. 1 owner and very well cared for. These are high-end, discontinued, and collectible — providing clear, accurate sound in a compact package.Condition / Features: • Excellent cosmetic and functional condition • Original boxes and manuals included • THX certified, full-range bookshelf design for rich, detailed audio • MK II model with improved crossovers and driver refinements over the original version • Consecutive serial numbers
At USD625 for a pair of Miller & Kreisel LCR-750 MK II bookshelf speakers, the asking price feels ambitious against the used market, where clean pairs typically trade in the USD400-550 range depending on condition and finish. These compact THX Select-certified LCRs punch above their size with dual 5.25-inch poly woofers and a 1-inch soft-dome tweeter, but age and wear often soften that edge, making fair value hover lower unless they're pristine.
Before biting, verify the cabinets for resonance or delamination—those low-resonance enclosures can crack under heat cycles—and check the tweeter alignment arrows for proper THX angling, as misfires lead to uneven dispersion. Grilles and single-wire binding posts should be included; test for impedance dips below 4 ohms with your amp to avoid surprises.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
M&K Sound was founded in 1973 in Beverly Hills, California, when Walter Becker of Steely Dan commissioned recording engineer Ken Kreisel and audio entrepreneur Jonas Miller to design a studio reference subwoofer and monitoring system for the Pretzel Logic album. The resulting world's first balanced dual-drive subwoofer became the sonic foundation for a million-selling Top Ten hit, establishing M&K's reputation from inception. The company pioneered numerous industry firsts, including the satellite-subwoofer system, the first self-powered subwoofer, and the first THX-approved single-cabinet subwoofer, drawing on rigorous acoustical research and live recording expertise.
M&K Sound specializes in high-performance loudspeakers and subwoofers, positioning themselves as professional studio monitors and premium home theater solutions. Their product line centers on powered subwoofers and satellite speaker systems designed for accurate sound reproduction across music and film applications. The company's engineering foundation combines scientific methodology with critical listening disciplines, informed by the acoustical research of Dr. Lester Field, a former Bell Telephone scientist and professor at Caltech and Stanford.
M&K Sound occupies the high-end professional and prosumer market segment, with a heritage rooted in studio and mastering applications. Academy Award-winning films including Lord of the Rings, Wall-E, and The Incredibles were mixed and edited on M&K speakers, while the brand has equipped leading recording studios and private installations for industry professionals. This positioning reflects M&K's status as a choice for discerning listeners and professionals who prioritize accuracy and sonic integrity over mass-market appeal.
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