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The PRO 900i addresses both professional sound engineers and discerning music lovers equally: both require dynamic, linear, closed headphones of the highest precision. That’s why Ultrasone have chosen a 40-millimeter Mylar sound transducer, hardened with titanium to offer maximum impulse response and extended frequency range, from 6 Hz to 42 kHz.
The closed design principle provides a particularly precise bass reproduction with the added benefit that sound does not escape and distracting external noise is reduced. In addition, S-Logic Plus, Ultrasone’s patented technology offers decentered configured transducers and incorporates the shape of the outer ear into the headphone’s design, providing a better stereo impression. At the same time, detailed depth gradation is achieved thanks to the inner ear reverberations, making each piece of music sound closer to an actual acoustic environment.
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Like all headphones in the PRO range, the Ultrasone PRO 900i has an ultra-solid design based on a durable, elastic plastic in the ear cups and a headband construction with metal strip. The sustainable design allows replacement of almost every individual component. The detachable cable is securely attached to the headphones by means of a screw lock. The ear cushions can be attached simply and quickly using the Ultrasone speed-switch system with its bayonet connector – and in this way can also be easily replaced when worn out.
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For particularly safe transport and optimal storage, Ultrasone also includes the stable PRO box with the PRO 900i. This high-quality hardcase not only encases the headphones, but also the extensive included accessories: the PRO box contains a 1.5m ultra-soft cable with 3.5mm stereo jack for work and music enjoyment on a notebook, smartphone or tablet. This is complemented by a professional 3m coiled cable with 6.3mm Neutrik stereo jack. In addition, there is also a pair of replacement ear pads.
www.ultrasone.com