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,,compact and stylish units (...) Great clarity, supreme mid-range, and adequate bass in the proper space - they can be mounted on the wall, turned on their side or placed on stands for optimum listen
€300 is fair to slightly good for a pair of these, not a bargain, but comfortably in the sensible used range. Recent listings cluster around about €280–€450 for working pairs, with some mint examples higher and incomplete or parts-only units far lower, so this sits near the middle rather than at a deep-discount level.
That makes it a worthwhile buy if the cabinets are clean and the drivers are original and healthy. The RDM One is well regarded as a compact KEF monitor with proper imaging, a coherent midrange, and enough refinement to justify collecting if you want a smaller reference-style speaker. At this price, I’d mainly want confirmation of good tweeters, intact grilles, and no crossover or foam/rubbery surround issues before jumping.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
KEF traces its roots to 1961, when British engineer Raymond Cooke founded the company in a modest Nissen hut on the grounds of the Kent Engineering and Foundry in Maidstone, England. A former BBC engineer and Wharfedale veteran, Cooke was driven by a passion for music and a commitment to technological innovation, aiming to reproduce sound as faithfully as the original performance. From its inception, KEF pioneered materials like foil-stiffened polystyrene diaphragms and Melinex tweeters in its debut K1 loudspeaker, setting a benchmark for engineering precision that propelled the brand to early acclaim.
KEF has long specialized in loudspeakers, establishing itself as a leader with iconic innovations such as the Uni-Q coaxial driver and computer-aided design techniques that revolutionized driver and enclosure development. While drive units supplied to other manufacturers fueled its growth, the brand's core output remains high-fidelity speakers across categories like floorstanders, bookshelves, and home theater systems, including early THX-approved setups. Active wireless models and reference-grade series extend its portfolio, though it eschews amplifiers, turntables, DACs, headphones, or cables.
Renowned for its science-driven heritage, KEF occupies a premium position in the hi-fi market, blending accessible high-end performance with cutting-edge technology. Collectors prize vintage BBC monitors and Bextrene-driver classics, while modern buyers seek its precise, natural soundstaging. Decades of awards affirm KEF's status as a respected innovator, appealing to discerning audiophiles who value engineering over hype.
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