The PRO 900 offers professional and unlimited sound performance. This is the first pair of Ultrasone PRO headphones with the patented S-Logic PLUS technology.

S-Logic Plus is the newest advancement in the S-LogicTM Natural Surround System. S-Logic Plus profits directly from innovations developed for our flagship Edition range, the ultimate headphones for critical listening. This sophisticated new technology combines precision dampening with micro-acoustic reinforcement, allowing driver, buffer-board, and spatial parameters to complement one another in an optimal manner. So the acoustical design of S-Logic PLUS models and their tonal fine-tuning result in maximum neutral sound impression with more vivid perception of voices and instruments.

ULE-Technologie & PRO Design
PRO headphones stand for Ultra Low Emission (ULE-technology) with significant benefits for professional users and PRO headphones show a specific design. The PRO 900 appearance does not only distinguish the professional line but also allows due to more ear anatomy area a higher degree of transparency in combination with the spatial sense and understanding.

To understand what ULE-technology does, you need to know that most headphone drivers produce low-frequency magnetic fields as they convert an electric signal into an acoustical signal you hear as music. In response, Ultrasone developed a special MU Metal shielding (ULE-technology) to reduce the radiation by up to 98% compared to current headphones. The ULE-technology has stood the test of international review and is recommended by technical surveillance organisations. Ultrasone originally developed the ULE-technology for professionals as they do spend half of their lives in headphones. But due to grand requests the ULE-technology has now been integrated in other Ultrasone headphone lines.

Safer hearing
S-Logic does not only create a Natural Surround Sound. S-Logic allows at the same time a reduction of sound pressure levels by up to 40% (3-4 dB) for the same loudness sensation. This may reduce the risk of hearing damage while ensuring hours of fatigue-free listening. However, Ultrasone generally advises not to listen to music at high volumes to prevent hearing damage.

Features

• Pro-Quality Sound
Large 40mm titanium-plated drivers provide exact sound reproduction. Combined with Ultrasone’s S-Logic Surround Sound Technology, this puts you right into the center of the music. Instead of piping sound directly into your head, the S-Logic technology creates a rich and detailed soundscape that seems more like you’re listening to live music than headphones.

• Safer Listening
In addition to providing a realistic sonic experience, the S-Logic technology provides the same loudness sensation as other headphones, with an up to 40% lower dB output. This lets you set the volume lower on your music player, and potentially reduce the risk of hearing damage.

• Ultra Low Emissions
The PRO 900 headphones have ULE technology with an MU metal bufferboard to significantly reduce the amount of electromagnetic emissions produced by the headphones; up to 98% less than standard headphones. This is excellent for professional users who spend the majority of their day wearing headphones.

• Comfortable Design
The fully-adjustable headband and velvet around-ear speed-switch earpads provide long-lasting comfort. A spare pair of earpads are included.

• Portable Design
The headphones fold down easily into the included hard case for convenient storage and travel.

• Detachable Cables
Two ultra-soft single-sided detachable cables are provided; one straight and one coiled. Each cable has a 1/4" stereo plug, and a 1/4" to 3.5mm mini adapter is included.

Specifications