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Short description 

Foldable, open-back high-quality headphones 
with new Aluminium nameplates 

with natural colours concept and extraordinary sound 
Technologies: 
S-Logic™ Natural Surround Sound 

MU Metal shielding (ULE-technology) 
Safer hearing 

 

Technical specifications 

S-Logic™ Natural Surround Sound 
Dynamic principle 

Frequency range 10-25.000 Hz 
Impedance 75 Ohm 
Sound pressure level 94 dB 

MU Metal bufferboard, reduced field emissions  
in accordance with ULE (=Ultra Low Emission) standard 

Driver 40 mm gold-plated 
Weight 292 g (without cord) 

Detachable straight cord (length ca 3m) 
incl. adapter 3,5/6,3 mm gold-plated 

Transportation bag 
Demo CD 
Instruction manual 

Long-term availability of spare parts 
 

Character  
You are looking for an open-back HFI model? With the HFI-2200 goose skin feeling is 

assured. These open-back headphones with Ultra Low Emission (ULE-technology) offer 
airy and finest 3-dimensional sound reproduction. Specifically designed detachable 

velvet earpads will comfort your extensive listening hours. The HFI-2200 is the only 
Ultrasone HFI model with detachable cable. The natural colours concept is unique and 
emphasizes the high profile and listening pleasure.  

 

ULE-technology  

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. 

Recreative acoustics 

 

HFI-2200 

 

 

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