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Classic cans The AKG K240 Studio over-ear, semi-open headphones are designed for professional applications such as mixing, mastering and playback. Their advanced 30 mm XXL transducers with patented Varimotion diaphragms deliver a wide dynamic range, increased sensitivity and high sound levels, while their semi-open design provides a solid bass range and extremely clear highs. With impressive accuracy, musicians, producers and engineers rely on the AKG K240 Studio to clearly hear mixing details, which has made these headphones a standard in recording settings. In addition to great sound quality, the headphones are extremely durable and comfortable. Not only built to withstand the demands of countless hours in the studio, their self-adjusting headband provides an ideal fit and their over-ear pads nicely envelop the ears. The AKG K240 Studio headphones also feature a professional mini XLR connector and come with a 3 meter cable and convertible jack plug for connecting portable equipment easily. Altogether, from performance and ease of use to comfort and reliability, the AKG K240 Studio is a powerful tool for production environments. General Specifications Headphone type semi-open Max. Input Power 200 mW Sensitivity headphones 104 dB SPL/V Rated Impedance 55 Ohms Detachable cable yes Cable Length 3 m Earpads replaceable yes Audio Specifications Maximum input power200 mW Audio frequency bandwidth 15 - 25000 Hz Dimensions Length 110 mm Width 190 mm Height 200 mm Net Weight 240 g Audio Interface Type Stereo plug – 3.5mm (1/8-inch) with 6.3 mm (1/4”) screw-on adapter Gender Male Contacts3-pin Cable Detachable Yes Wearing Style Over-ear Yes Application Studio Mixing Yes Hi-Fi Listening Yes Foldable Not foldable Yes Cup Style Semi-open Yes
Used AKG K240 closed-back studio headphones in decent shape typically trade in the USD 92-214 range on the recent market, with a median around USD 145 from 65 comparable listings. At USD 89 with unknown condition, this one's a solid bargain—well below the 25th percentile—if it checks out, especially since genuine mint examples push toward the higher end.
Buyers, verify the drivers for the common hiss or distortion from age-related foam degradation, and test the self-adjusting headband for creaks, as those plastic hinges crack over time. Expect the original pouch and coiled cable; missing them drops value, and confirm it's not a counterfeit by checking serial numbers against AKG's authentic build quality.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
AKG traces its roots to post-war Vienna, Austria, where physicist Dr. Rudolf Görike and engineer Ernst Pless founded Akustische und Kino-Geräte Gesellschaft m.b.H. in 1947. Emerging from the ruins of World War II, the duo initially supplied cinemas with loudspeakers, film projectors, and light meters, handcrafting products in a modest basement with just five employees. Rapid expansion followed, as AKG ventured into car horns, intercoms, and carbon microphone capsules, quickly gaining traction with radio stations, theaters, and jazz clubs across Europe.
The brand's product focus sharpened on professional audio excellence, pioneering headphones in 1949 and achieving global acclaim with the D12 microphone in 1953, which set standards for voice transmission. AKG became renowned for high-fidelity microphones, including iconic models like the C12 tube mic, alongside headphones, wireless systems, and phonograph cartridges. While early diversification included cinema gear, the company honed in on studio-grade transducers and monitoring tools, later incorporating digital wireless tech.
Today, under Harman International (a Samsung subsidiary since 2017), AKG holds a commanding position as a pro-audio powerhouse, favored by engineers, performers, and broadcasters for its precision and reliability. It bridges mid-tier accessibility with high-end heritage, appealing to discerning hi-fi buyers seeking reference-quality headphones and mics that deliver uncolored, transparent sound— a legacy of Austrian engineering that remains a studio staple worldwide.
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