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At €270, this is very easy to like for a floorstanding Infinity that originally sold around €499 each and was reviewed as a serious three-way, four-driver design; that puts the asking price well below new and into clearly used-market territory. Given the model’s age, €270 reads as fair-to-good rather than aggressive, and if the pair is complete and genuinely in good cosmetic/mechanical shape, it’s the kind of price that usually makes sense to move on quickly.
What makes it worthwhile is the Beta 50’s format: dual 8-inch woofers, a dedicated midrange, and a CMMD tweeter give it the scale and drive that suit larger rooms and energetic listening, with enough pedigree to make it a credible step up from budget towers. The main value check is condition consistency—driver surrounds, cabinet edges, and matching cosmetics—because at this age the real win is finding a clean, unmolested pair, ideally with grilles and original stands/spikes if included.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Infinity emerged in 1968 from a Woodland Hills, California garage, founded by Arnie Nudell, John Ulrick, and Cary Christie. Driven by Nudell's passion for classical music and innovative engineering, the trio launched with the groundbreaking Servo-Statik speaker system, featuring electrostatic panels paired with a servo-controlled woofer derived from defense technology. This American brand quickly gained traction through pioneering materials like neodymium magnets, mylar diaphragms, and polypropylene cones, establishing a legacy of pushing audio boundaries before acquisitions by Electro Audio Dynamics in 1974 and Harman International in 1983.
The company has long focused on loudspeakers as its hallmark, from early electrostatic hybrids and the iconic Reference and Kappa series to later EMIT and EMIM drivers in the 1970s. While primarily a speaker specialist, Infinity has ventured into home and mobile audio, including amplifiers and systems under Harman ownership, now part of Samsung since 2017. Turntables, DACs, headphones, and cables remain outside its core expertise.
Positioned as a mid-tier powerhouse with high-end aspirations, Infinity commands respect among knowledgeable buyers for its vintage collector appeal and enduring innovations. Once a darling of audiophiles for transparency and dynamics, it now blends accessible performance with Harman reliability, appealing to those seeking proven heritage without boutique exclusivity.
See all Infinity listings on RADAR.
Kleinanzeigen
Fair
audio-markt.de
Good
DE
Marktplaats
Marktplaats
NL
Kleinanzeigen
Excellent
DE
Kleinanzeigen
Excellent
DE
