DJ 1 PRO

DJ-1 PRO Box Contents
Professional headphones
2 detachable cables: one coiled (length 3 m),
one coiled with volume control and stereo/mono
switch (length > 3 m) with gold- plated jacks 6,3 mm
and gold-plated adapter 6,3/3,5 mm
Spare pair of speed-switch ear pads
Demo CD
Instruction manual

Technical Specifications
S-Logic™ Natural Surround Sound
Dynamic principle
Frequency range 10-22.000 Hz
Impedance 64 Ohm
Sound pressure level 102 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 50 mm Mylar
Weight 295 g (without cord)
Long-term availability of spare parts

In cooperation with the most famous DJs, Ultrasone developed these outstanding pair of professional DJ headphones. Using a heavy duty 50 mm Mylar driver, the closed-back DJ1 PRO provides the most powerful music output in combination with the most advanced technologies. Equipped with MU-Metal shielding these headphones also meet the needs of DJs considering safer hearing aspects. In addition you will find useful accessories in the DJ1 PRO hardcase: one coiled cord (ca 3m), one coiled cord with volume control and stereo/mono switch and a spare pair of speed-switch earpads. The new designed hardbox will ensure a safe transportation and storage.

ULE-Technology & DJ1 PRO design
DJ1 PRO headphones stand for Ultra Low Emission (ULE-technology) with significant benefits for professional users and DJ1 PRO headphones show a specific design. The Ultrasone DJ1 PRO 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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.

DJ 1

Foldable, closed-back high quality DJ headphones
with very exclusive design and extraordinary sound,
offering the highest standard of technologies:
S-Logic™ Natural Surround Sound Plus
MU Metal shielding (ULE-technology)
Safer hearing

Technical Specifications
S-Logic™ Natural Surround Sound Plus
Dynamic principle
Frequency range 10-22.000 Hz
Impedance 32 Ohm
Sound pressure level 104 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 50 mm Mylar
Weight 285 g (without cord)
Coiled cord length ca 3 m
3,5/6,3 mm screwable gold-plated plug
Transportation bag
Demo CD
Instruction manual
Long-term availability of spare parts

Character
The sound has been tested by DJs and competitors and proved as the best in the whole DJ scene. The new design shows a pair of high-quality headphones including all Ultrasone technologies. Not only the patented S-Logic™ Plus technology is standard, also the Ultra Low Emission (ULE-technology) belongs to this model. Safer hearing aspects have become very important for DJs. With its heavy duty Mylar driver the DJ1 provides powerful sound. The DJ1 is made for compact storage (transportation bag included) and one-ear-listening due to the folding-mechanism.

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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

S-Logic™ Plus
S-Logic™ Plus is the newest advancement in the S-Logic™ Natural Surround System, squeezing the
BIG S-Logic™ soundstage found in our PRO series headphones into the more streamlined ear-cups of
select HFI & DJ models. 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 damping with micro-acoustic reinforcement, allowing driver, buffer-board, and spatial parameters to compliment one another in an optimal manner. So the acoustically redesigned ear-cups of these new
models and their tonal fine-tuning result in a most neutral sound impression, including more vivid
perception of voices and instruments.

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.

HFI-450

Closed-back home & studio headphones
Technologies:
S-Logic™ Natural Surround Sound
Safer hearing

Technical Specifications
S-Logic™ Natural Surround Sound
Dynamic principle
Frequency range 20-20.000 Hz
Impedance 32 Ohm
Sound pressure level 96 dB
Driver 40 mm Mylar
Weight 265 g (without cord)
Straight cord (length ca 3m)
Long-term availability of spare parts

Character
The new HFI-450 includes the sound technology of the legendary HFI-15G. The closed-back HFI-450 shows its high profile with powerful and very clear sound reproduction which is highly appreciated by all Ultrasone users. These headphones have been specifically developed for all Ultrasone fans who are looking for an entry model for home and studio application. Of course this model also includes the patented Ultrasone S-Logic™ Natural Surround Sound Technology.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.

HFI-680

Foldable, closed-back high quality headphones
with very exclusive design and extraordinary sound,
offering the highest standard of technologies:
S-Logic™ Natural Surround Sound Plus
MU Metal shielding (ULE-technology)
Safer hearing

Technical Specifications
S-Logic™ Natural Surround Sound Plus
Dynamic principle
Frequency range 15-25.000 Hz
Impedance 75 Ohm
Sound pressure level 99 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 40 mm gold-plated
Weight 285 g (without cord)
Straight cord (length ca 3m)
3,5/6,3 mm screwable gold-plated plug
Transportation bag
Demo CD
Instruction manual
Long-term availability of spare parts

Character
Eye-catching exclusive design and sand-grey coated. The HFI-680 catches the eye and enjoys your ears with an extraordinary balanced, natural and detailed sound image. Experience the complete isolation of closed-back headphones and the honest sound of open ones. The high class gold-plated drivers of the HFI-680 are very sensitive and provide a maximum of transparency.

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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

S-Logic™ Plus
S-Logic™ Plus is the newest advancement in the S-Logic™ Natural Surround System, squeezing the
BIG S-Logic™ soundstage found in our PRO series headphones into the more streamlined ear-cups of
select HFI & DJ models. 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 damping with micro-acoustic reinforcement, allowing driver, buffer-board, and spatial parameters to compliment one another in an optimal manner. So the acoustically redesigned ear-cups of these new
models and their tonal fine-tuning result in a most neutral sound impression, including more vivid
perception of voices and instruments.

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.

HFI-780

Foldable, closed-back high quality headphones
with very exclusive design and extraordinary sound,
offering the highest standard of technologies:
S-Logic™ Natural Surround Sound Plus
MU Metal shielding (ULE-technology)
Safer hearing

Technical Specifications
S-Logic™ Natural Surround Sound Plus
Dynamic principle
Frequency range 10-26.000 Hz
Impedance 35 Ohm
Sound pressure level 96 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 40 mm gold-plated
Weight 285 g (without cord)
Straight cord (length ca 3m)
3,5/6,3 mm screwable gold-plated plug
Transportation bag
Demo CD
Instruction manual
Long-term availability of spare parts

Character
The exclusive design of the closed-back HFI-780 is accentuated by the polar-silver colour. The HFI-780 contains all Ultrasone technologies such as S-Logic™ Plus, ULE and safer hearing. The HFI-780 is developed from the studio sector and is distinguished by a frequency response specifically tuned for DVD and gaming. Sophisticated home cineasts and music enthusiasts are overwhelmed by the impressing sound that appears as though you are listening to speakers meters away. Gamers are impressed by the exact sound reproduction, making the gaming world come alive. The low frequency ranges are being risen in order to reach the highest possible synergies with DSP-Systems like DOLBY HEADPHONE™ and Yamaha SILENT CINEMA™.

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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

S-Logic™ Plus
S-Logic™ Plus is the newest advancement in the S-Logic™ Natural Surround System, squeezing the
BIG S-Logic™ soundstage found in our PRO series headphones into the more streamlined ear-cups of
select HFI & DJ models. 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 damping with micro-acoustic reinforcement, allowing driver, buffer-board, and spatial parameters to compliment one another in an optimal manner. So the acoustically redesigned ear-cups of these new
models and their tonal fine-tuning result in a most neutral sound impression, including more vivid
perception of voices and instruments.

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.

HFI-2200

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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.

PRO-650

Foldable, closed-back professional headphones
with new Aluminium nameplates
New PRO Box (hardcase) for safe
transportation and storage, incl. accessories
Technologies:
S-Logic™ Natural Surround Sound
MU Metal shielding (ULE-technology)
Safer hearing

PRO Box Contents
Professional headphones
2 detachable cables: one straight (length 3 m),
one coiled (length > 3 m) with gold- plated jacks 6,3 mm
and gold-plated adapter 6,3/3,5 mm
Spare pair of speed-switch ear pads
Demo CD
Instruction manual

Technical Specifications
S-Logic™ Natural Surround Sound
Dynamic principle
Frequency range 10-25.000 Hz
Impedance 75 Ohm
Sound pressure level 95 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 40 mm gold-plated
Weight 295 g (without cord)
Long-term availability of spare part

Character
The PRO 650 comes in the specifically designed PRO Box including 2 detachable cables and a spare pair of earpads. The earpads are easy to change (speed-switch-technology). As with all Ultrasone PRO models the detachable cables make it easy to choose the cable you prefer. The closed-back PRO 650 uses high-class gold-plated drivers. In combination with the design, PRO 650 offers an spectacular open 3-dimensional balanced image with a maximum of transparancy.

ULE-Technology & 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 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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.

PRO-750

Foldable, closed-back professional headphones
with new Aluminium nameplates
New PRO Box (hardcase) for safe
transportation and storage, incl. accessories
Technologies:
S-Logic™ Natural Surround Sound
MU Metal shielding (ULE-technology)
Safer hearing

PRO Box Contents
Professional headphones
2 detachable cables: one straight (length 3 m),
one coiled (length > 3 m) with gold- plated jacks 6,3 mm
and gold-plated adapter 6,3/3,5 mm
Spare pair of speed-switch ear pads
Demo CD
Instruction manual

Technical Specifications
S-Logic™ Natural Surround Sound
Dynamic principle
Frequency range 8-35.000 Hz
Impedance 40 Ohm
Sound pressure level 94 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 40 mm titanium-plated
Weight 295 g (without cord)
Long-term availability of spare parts

Character
These closed-back headphones use the stiffest drivers available: Titanium-plated! These drivers offer the most exact and correct sound reproduction you can imagine. Using specifically developed velvet earpads, you will have fantastic comfort for extensive working hours, combined with a maximum of isolation. The PRO 750 comes in the safe PRO hardcase, incl. one straight and one coiled cord, a spare pair of velvet earpads which are easy to change due to the speed-switch technology.

ULE-Technology & PRO design
PRO headsphones stand for Ultra Low Emission (ULE-technology) with significant benefits for professional users and PRO headphones show a specific design. The PRO 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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.

PRO-900

Foldable, closed-back professional headphones
Aluminium nameplates
New PRO Box (hardcase) for safe
transportation and storage, incl. accessories
New 40 mm Titanium plated drivers
Velvet ear pads in BLACK & SILVER
Ultra Soft Cable (USC-cable)
Neutrik connectors
Technologies:
S-Logic™ Natural Surround Sound PLUS
MU Metal shielding (ULE-technology)
Safer hearing

PRO Box Contents
Professional headphones
Neutrik connector
Ultra Soft Cable (USC-cable)
2 detachable cables: one straight
(length 3m), one coiled (length
> 3m) with gold-plated jacks 6,3 mm
6,3/3,5 mm gold-plated adaptor
Velvet speed-switch ear pads in
BLACK & SILVER (spare earpads)
Demo CD
Instruction manual

Technical Specificaions
S-Logic™ Natural Surround Sound
S-Logic PLUS technology
Dynamic principle, closed
Frequency range 6-42000Hz
Impedance 40 ohm
Sound pressure level 96 dB
MU Metal bufferboard, reduced
field emissions in accordance
with ULE (Ultra Low Emission) standard
New 40 mm titanium-plated drivers
Weight 295g (without cord)

ULTRASONE S-Logic PLUS Technology
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.
Enjoy the new standard and trust your ears...

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-Technology & 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. The PRO 900 headphones offer an additional possibility to choose a black pair of PRO headphones with black and silver velvet earpads.

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.

PRO-2500

Foldable, open-back professional headphones
with new Aluminium nameplates
New PRO Box (hardcase) for safe
transportation and storage, incl. accessories
Technologies:
S-Logic™ Natural Surround Sound
MU Metal shielding (ULE-technology)
Safer hearing

PRO Box Contents
Professional headphones
2 detachable cables: one straight (length 3 m),
one coiled (length > 3 m) with gold- plated jacks 6,3 mm
and gold-plated adapter 6,3/3,5 mm
Spare pair of speed-switch ear pads
Demo CD
Instruction manual

Technical Specifications
S-Logic™ Natural Surround Sound
Dynamic principle
Frequency range 8-35.000 Hz
Impedance 40 Ohm
Sound pressure level 94 dB
MU Metal bufferboard, reduced field emissions
in accordance with ULE (=Ultra Low Emission) standard
Driver 40 mm titanium-plated
Weight 294 g (without cord)
Long-term availability of spare parts

Character
You prefer open-back headphones? Using the same stiff titanium-plated drivers as PRO 750, the PRO 2500 model provides due to its open-back design the most airy sound within the complete PRO line. Accuracy and the finest sound reproduction is guaranteed for everybody who does not wish a closed-back system.

ULE-Technology & 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 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.

S-Logic™ Natural Surround Sound
Through S-Logic™ Natural Surround, the sound moves out of your head and into the room around you. Consequently, the music is no longer confined, but breathing once again, spacious and organic. Direction and distance are more easily perceived – it’s like being at a live concert (…or in the studio). No additional equipment is necessary. So with just a pair of Ultrasones and your favorite audio device, prepare yourself for genuine 3-dimensional enjoyment!

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.