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Ultrasone Pro 900i Headphones


The black Pro 900 i are the first closed Pro headphones to feature the S-Logic® Plus technology.

The titanium-coated sound transducer offers acoustics at the highest level.

The substantial equipment contained in the transport box of the PRO 900 i includes

  • Extra velvet ear pads
  • 1.5m USC (ultra soft cable) with a 3.5mm stereo jack
  • 3m coiled cable with a 6.3mm NEUTRIK stereo jack.

Professionals swear by the sound and technology expertise of the PRO 900 i.

With the Pro 900i, the Bavarian headphone specialist Ultrasone is presenting a new model generation of its highly acclaimed closed top model from the Pro series.

These headphones for professional users and discerning music lovers produce excellent sound with S-Logic® Plus technology and are now even more comfortable to wear.

The new, broader headband design allows for impoved wear comfort.

With the Pro box hard case and cables for studio, hi-fi and mobile use with tablets and notebooks, the PRO 900i is ideally equipped for any situation.

Harmony for discerning music lovers and professionals

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-millimetre Mylar sound transducer, hardened with titanium to offer maximum impulse response. With a frequency range of 6 Hz to 42 kHz, the PRO 900i covers a spectrum even broader than the range of human hearing. The closed design principle provides particularly precise bass reproduction. In addition, sound does not escape and distracting external noise is reduced.

S-Logic Plus for spatial, safe listening

S-Logic Plus, Ultrasone’s patented technology offering decentrally configured transducers, presenting music in a completely unique way: by incorporating the shape of the outer ear into the headphone’s design, a broad stereo platform is created as the sound unfolds, providing an impressive stereo panorama.

At the same time, detailed depth gradation is achieved thanks to the inner ear reverberations, making each piece of music sound as if it is being performed on a real stage. In this way, studio engineers can hear a more differentiated sound than with comparable headphones, and music enthusiasts can enjoy their favourite titles as if on the big

Maximum wear comfort – the cherry on top

No matter whether music is part of your professional life or a source of pure enjoyment – headphones have to sound good and be comfortable. And this is exactly what Ultrasone has improved in the new 900i version: thanks to the new, much broader headband cushioning, these headphones are now even more comfortable to wear.

The durable artificial leather ensures they are pleasant to touch. In addition, velvet ear cushions caress the head.

Solid design for long-lasting music enjoyment

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.

PRO box for safe transport; extensive accessories

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.

Drew Recommends the Silver Dragon V3

Headphone Cable as the best upgrade

for the  Ultrasone Pro 900 headphone. 

Drew also recommends the 

Burson Soloist Headphone Amplifier or the 

Burson Conductor Headphone Preamplifier,

Amplifier, & DACthe Astell & Kern AK100

Digital Media Player, the Astell & Kern AK120

Digital Media Player, the Astell & Kern AK-240

DAC Digital Media Player, or the Vorzüge

VorzAMP pure II Headphone Amplifier 

for the best quality sound.



Product Reviews

  • S-Logic™ Natural Surround Sound Plus
  • Dynamic principle, closed
  • Frequency range 6-42,000Hz
  • Impedance 40 ohm
  • Sound pressure level 96 dB
  • MU Metal bufferboard, reduced field emissions in accordance with ULE (Ultra Low Emission) standard
  • Driver 40 mm titanium-plated
  • Weight 295g (without cord)


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