High fidelity sound, meticulously crafted Melding best-in-class sound and true comfort in an iconic design, the Philips Fidelio M1MKII is expertly engineered and crafted for high definition music enjoyment. Its light yet sturdy design also ensures superb noise isolation on the go. Optimized 40mm neodymium drivers for pure authentic sound Each speaker driver is carefully hand picked, tuned and tested before being paired to ensure the most balanced natural sound. The 40mm drivers utilize high power neodymium magnets to deliver true high definition sound in a wide dynamic range, reproducing even the most minute details. Acoustically sealed to keep sound details in, noise out The Fidelio headphone features an acoustic seal that’s a specially designed ribbon lock built into the internal chamber, which eliminates any unnecessary sound leakage and preserves sound details. Not only do you get excellent bass extension, but also immersive enjoyment of every superb detail of your music, without environmental disturbances. Bass Reflex System delivers clear, dynamic and balanced bass The headphone’s acoustic closed-back architecture features a Bass Reflex System that essentially comprises ear-shells with strategically placed vents. These regulate the air pressure within the internal chamber, providing the diaphragm with a controlled environment for optimal acoustic response. Working in conjunction with the acoustic seal capture, every natural sound detail is isolated and precise and dynamic bass is delivered, without any compromising on sound clarity. Deluxe memory foam cushions for an ergonomic fit The materials used for the Fidelio headphones are carefully selected to ensure long-wearing comfort and enhanced sound performance. Deluxe breathable ear pads with memory foam are designed for optimal ergonomic fit. Not only does the foam mould itself perfectly to the shape of your ear, it also seals in bass sounds while keeping out ambient noise. This is designed with the outer cushion - using a balanced proportion of fabric and protein leather - to reduce ear surface pressure and heat build-up, so that the headphones feels and sounds excellent. Faux suede pouch offers stylish headphone protection Aluminum and stitched fine leather for premium look and feel Double-layered earshells engineered for sound precision The Philips Fidelio M1MKII's double-layered earshells are engineered to reduce resonance and to dampen vibration for genuinely precise and clean sound so you hear every superb sound detail. The solid, layered construction ensures durability and comfort, making the M1MKII an ideal music companion for a long time to come. Lighter voice coil for improved clarity and wider soundstage The Fidelio M1MKII utilizes a lighter voice coil compared to its predecessors, ensuring greater clarity in the low frequencies and wider extension in the high frequencies. The result is more finely detailed, spacious sound overall. Frequency response tuned to discerning listeners' preference Extensive research was done with discerning music lovers to gain insight to their listening preferences – for example, the optimal balance of sound characteristics that they favor. Our acoustic engineers then tuned the Fidelio M1MKII to take into account all the minute details that affect how listeners discern sound, such as how the ear reflects sound and resonates in response. As a result, we engineered our M1MKII headphones to reproduce sound that is as faithful to the original recording as possible - including current recording styles. Eco passport - Our environmental product specifications overview Philips cares about the environment and society at large, and strongly supports eco-design of products.