Feel the beat ... with HFI-550

Short description:
Foldable, closed-back superior headphones
with S-Logic™ Natural Surround Sound
Free demo-CD enclosed

Technical specifications:
S-Logic™ Natural Surround Sound System
Reduced magnetic field emissions
Standard LE (= Low Emission)
Dynamic principle
Frequency range 10 Hz - 22.000 Hz
Impedance 64 Ohm
Sound pressure level 100 dB
Driver 50 mm Mylar

Cord length ca. 3 m
3,5/6,3 mm gold-plated plug
Weight 265 g (without cord)

Long-term availability of spare parts

S-Logic™ Natural Surround Sound
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.

For this new technology additional equipment is not required. A pair
of ULTRASONE headphones plus your sound device and you will be
ready for the 3-dimensional music enjoyment!

Safer hearing
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 headphones, the HFI-550 has a strongly reduced radiation. The standard version LE (= Low Emission) offers a reduction of up to 60% 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.

Character
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 driver 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 having to remove the headphones from your head. Due to this folding mechanism, these headphones can be compactly stored and easily transported in a suitcase. Thanks to its closed construction, external noise is suppressed.