Through the S-Logic' Natural Surround Sound the usual headphone sound will be moved out of the head in the room around you. The sound is no longer locked in, but appears broad and detached. Directions and distances can be heard and perceived - it's just like being in a live concert.
In addition, the HFI-550 is easy on the ears: The S-Logic' Natural Surround Sound System allows an up to 40% lower dB output (3-4 dB) for the same loudness sensation, thereby the risk of hearing defects may be reduced enormously.
Reduced magnetic field emissions
Like all ULTRASONE products, the HFI-550 has a strongly reduced radiation. The standard version LE (= Low Emission) offers a reduction of approx. 50% in comparison with ordinary headphones.
It is certified and recommended by Technical Surveillance Organi-sations and Consumer Advice Centers with certified lowest magnetic field emissions.
Its robustness in addition to the Natural Surround Sound System makes the HFI-550 to one of the most demanded headphones in the consumer sector. Customers appreciate its dynamic and power spectrum.
With its particularly efficient 50 mm Mylar-electro acoustical trans-ducer these headphones produce an impressive sound pressure even with a high environmental sound intensity. Furthermore it is made for high power input.
Due to customer enquiries and requests we implemented an additional function which enables you to fold back and up the individual earpiece without removing these headphones from your head in order to be con-nected immediately with the "outside world" again. Because of this folding mechanism, these headphones can be compactly stored and easily transported in a suitcase. Thanks to its closed construction, external noise is suppressed. You can thereby concentrate exclusively on the transferred music or spoken language you are listening to.
• S-Logic' Natural Surround Sound System
• Reduced magnetic field emissions
• Standard LE
• Dynamic principle
• Frequency range 10 Hz - 22.000 Hz
• Impedance 64 Ohm
• Sound pressure level 100 dB
• Cord length ca. 3 m
• 3,5/6,3 mm gold-plated plug
• Weight LE 265 g (without cord)
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