For a limited time, we will include a mystery-free gift in consumer electronics worth 15 (in manufacturer RRP/SRP value) with this product, subject to availability and provided offer is at full retail price or no other offer involved. Please note this gift cannot be exchanged with any other product or refunded. Our K52 headphones deliver authoritative, extended low-frequency response that gives definition to kick drums and bass guitars. At the same time, the detail yet precisely balanced high-frequency response reveals the nuance in vocals, guitars and acoustic instruments. Our generous 40mm drivers deliver high sensitivity for powerful output, plus an extended frequency response that reveals every detail. The K52s also feature a low-impedance design for compatibility with a broad range of playback devices, from professional studio gear to portable music players. The K52 headphones' closed-back design eliminates audio leakage and delivers sound to your ears only. This exceptional level of audio isolation is due to a new acoustic chamber, which sits between the ear cup and the hinge that connects to the headband. Our innovative design gives you the freedom to move your head in any direction, without letting sound in or out. With the K52, you'll enjoy a private workspace, no matter where you choose to create. Nailing the perfect take sometimes means tracking the same part for hours - and that's where comfort really counts. AKG Unisex K52 High Performance Lightweight Closed-Back Headphones in Black.