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Ultrasone PRO 900i
Ultrasone PRO 900i
Ultrasone PRO 900i

Ultrasone PRO 900i


The PRO 900i are the first closed PRO headphones to feature the S-Logic® Plus technology. The titanium-coated sound transducer offers extremely low distortion, high volume capability with reference level frequency accuracy.

Technical Specifications

  • Principle: dynamic, closed
  • S-Logic® Plus technology
  • ULE technology
  • Impedance: 40 ohm
  • Driver/Driver size: Mylar/Titan, 40mm
  • Magnet: NdFeB
  • Frequency range: 6 - 42000 Hz
  • SPL: 96 dB
  • Weight (excl. cord): 295g

Accessories Incl.

  • Two detachable cables:
    • 1.5m USC (ultra soft cable) with a 3.5 mm stereo jack
    • 3m coiled cable with 6.3 mm NEUTRIK stereo jack
  • 2nd pair ear pads
  • Transportation box
  • Instruction manual

What is S-Logic® Plus?

S-Logic® Plus is the cutting-edge advancement in the S-Logic® Natural Surround System, profiting directly from innovations developed for Ultrasone's flagship Edition range, to create 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. The acoustically redesigned ear-cups of these new models and their tonal fine-tuning result in a most neutral sound impression with more vivid perception of voices and instruments.