There are at least 5 versions of the K240, and these are the Monitor version (2058Z0015: C). This Early model appears to be the third sold by AKG, and
AKG K240 Monitor Studio Headphones, from Austria.
Find many great new & used options and get the best deals for Vintage AKG K240 STUDIO MONITOR HEADPHONES Over Head 600 Ohms Made in Austria at the
Vintage AKG K240 STUDIO MONITOR HEADPHONES Over Head 600 Ohms Made in Austria
AKG K240 MONITOR 600Ω 高級な - ヘッドフォン
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AKG K240 Sextett--Grado'd AKG?, Page 98
Vintage AKG K240 600 Ohm made in Austria studio/mixing headphones
Vintage AKG K240 600 Ohm made in Austria studio/mixing headphones
K240 STUDIO Professional studio headphones
AKG Pro Audio K240 STUDIO Over-Ear, Semi-Open, Professional Studio Headphones : Everything Else