Audiophile-Grade Clarity in Every Note Step into audiophile sound with the new Sennheiser HD 550 Dynamic Driver Headphones, engineered to deliver exceptionally transparent and detailed audio. Equipped with high-performance 150 Ohm transducers crafted in Ireland, these headphones reproduce lifelike mids, punchy bass, and brilliant treble extension, ensuring every listening session is immersive and precise. Immersive Soundstage with Open-Back Design The HD 550's open-back architecture naturally expands sound waves, creating a spacious and realistic soundstage. This design enhances audio depth and realism, making each track feel vividly alive. Whether you're immersed in your favorite album or deeply engaged in competitive gaming, the expansive audio presentation will envelop you entirely. Precisely Angled Drivers for Authentic Audio Featuring precisely angled drivers, the HD 550 consistently places you in the optimal listening position, delivering flawless stereo imaging without the need for acoustic treatments. Enjoy the thrill of pinpoint-accurate sound localization, allowing you to distinguish individual instruments and subtle audio cues effortlessly. Lightweight Comfort for All-Day Use Weighing only 237 grams, the HD 550 is designed for sustained comfort. Its lightweight chassis, combined with reduced clamping force, offers long-lasting ease during extended listening sessions. The soft velour earpads gently envelop your ears, while the premium synthetic leather headband ensures maximum comfort, allowing you hours of fatigue-free listening. Robust Build with Long-Term Durability Built to last, the Sennheiser HD 550 boasts a durable metal mesh earcup cover and high-quality materials throughout. The headband design utilizes less plastic, enhancing structural integrity without adding unnecessary weight. Experience reliability and durability crafted through German engineering excellence, ensuring your headphones stand the test of time. Versatile Connectivity with Detachable Cable Stay connected with versatility thanks to the HD 550's detachable 1.8-meter cable, equipped with a standard 3.5mm plug and an included 6.35mm screw-on adapter. Whether you're connecting to professional audio gear, gaming setups, or mobile devices, switching between sources is seamless and hassle-free. Customizable with Optional Accessories Further enhance your listening experience with optional accessory cables available separately, including balanced and microphone-integrated options. Tailor your connectivity needs to your precise usage scenario, expanding the capabilities of your HD 550 headphones for professional or casual applications alike. Engineered for Pure, Unadulterated Sound Unlike headphones that rely on digital enhancements, the HD 550 delivers a pure analog audio path from source to ear, free from additional noise or distortion. Our engineers have meticulously fine-tuned the acoustic properties of every component—from driver angling to earpad material selection—to ensure authentic, distortion-free sound reproduction. Uncover Hidden Details in Your Media With the HD 550 headphones, you'll discover previously unnoticed audio nuances—faint vocal breaths, subtle instrumental textures, and precise in-game footsteps. The neutral tuning avoids exaggerated bass or treble, revealing audio exactly as intended by artists and sound engineers. Rediscover your favorite music and games with a newfound clarity and detail. A Legacy of Excellence in Audio Design Sennheiser’s longstanding tradition of German precision engineering guarantees that your HD 550 headphones deliver outstanding quality and performance. With replaceable earpads and cables, these headphones promise longevity, allowing you to enjoy pristine sound for years to come. Technical Specifications Feature Details Design Over-Ear, Open-Back Driver Dynamic Impedance 150 Ω Frequency Response 5 Hz - 39,500 kHz Total Harmonic Distortion (THD) <0.2% Max Sound Pressure Level 106.7 dB What's In the Box Sennheiser HD 550 Over-Ear Headphones Detachable 1.8-meter Cable with 3.5mm Plug 3.5mm to 6.35mm Screw-on Adapter Quick Start Guide Safety Guide