The K142HD is on-ear/open back; the K242HD is over-ear/open back; the K172HD is on-ear/closed back; and the K272HD is over-ear/closed back.

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Each model uses the manufacturer's patented Varimotion diaphragm technology, which enables the diaphragm perimeter to vibrate elastically but its centre to have a piston-like motion. This motion prevents any undesirable resonances, ensuring clean sound reproduction and good spatiality and transparency, even at high frequencies. In addition the flexible edge of the diaphragm is thinner and vibrates more easily, which guarantees powerful and dynamic bass.
These light weight mocha-coloured headphones have a self-adjusting headband that ensures that they're comfortable to wear. Each model includes soft velvet ear pads and a single-sided three metre "oxygen-free" cable (99.99% OFC) for optimum transmission. Their flat frequency response ranges from of 16Hz–26,000Hz; they are rated to handle input power of 200mW; and present an impedance of 55 ohms.

RRP
K142HD $249
K172HD $299
K272HD $399
K242HD $299