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LEAR NatroSound™ NS-U1 in ear monitor (New Version)

LEAR NatroSound™ NS-U1 in ear monitor (New Version)

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We name this NS, NatroSound™

Video Introduction :

LEAR's NS technology makes earphones simulate the loudspeakers' natural hearing experience. With NS, users can experience a natural front audio image with current audio files, without any additional plug-ins or external power! A lot of users feel uncomfortable, some to an extent that they get a headache because of traditional earphones' stereo sound.

The sound on both loudspeakers are received by both our ears, and our ears determine the distance from the sound source with this effect.

The sound on a pair of headphones come with separate channels like loudspeakers. As the sound of headphones direct to one ear at a time, the ear would not receive the sound from the opposite channel. This results in an unnatural sound, which some might feel uncomfortable with this 'inside the head' sound effect that is different from the real world.

The NS simulates a sound closer to the natural and actual sound from the real world.

The NS technology sends the sound from opposite channel to the opposite earphone, in which NS acoustically simulates the natural sound delay and level. Consequently, user can experience the normal loudspeakers sound with NS.The NS technology sends the sound from opposite channel to the opposite earphone, in which NS acoustically simulates the natural sound delay and level. Consequently, user can experience the normal loudspeakers sound with NS.

Some might link to Crossfeed and relates electronics/softwares/DSP products, but LEAR's NS technology is the world's first acoustical HRTF simulation earphones technology, which features are listed below:

No external software/hardware, electronics, or external power needed: plug the NS earphones into any mobile/player and that's it!

A NS switch is attached onto the cable, users can alter between traditional or NS sound at will. for if the music is a binaural recorder, it works better with traditional sound.     

The 2016 ver. LEAR NatroSound™ NS-U1!(As well as discontinued production of the gold and silver black editions)

After months of evaluating customer feedbacks, we have improved the latest NS-U1 on the following: 

 1- Gradient colouring of metallic black to blue/grey instead of the dual colour electroplating, for a more elegance look. 

2- New canal design for a better tone and sound quality and improved fitting .

3- Better workmanship on earphones resulting in a more durable earphones. 

4- Plug of NSC-01 3.5mm plug has been improved with better insulation, which would prevent it from short circuit or connectivity issues on certain Smart Phones. 

Sound signature

Experience the NatroSound™ now:

With default NSC-01 : Natural mid and high , solid deep bass.

NSC-03 : custom tunable design allows users to adjust from super bass warm sound to the neutral flat clean sound.

The newer U1 has a 6mm dynamic driver equivalent to the LUF-NS2, which results in a similar sound to it under the NS off. The U1 has a warmer and brighter sound, whilst the NS-2 has a more natural and detailed sound. It is without doubt that the LUF series has smaller and lighter size and shape compared with NS-U1, which fits better for users with smaller ears. 

The above are for reference, which users are suggested to purchase with their own preference.


  • Driver: 2 x 6 mm CCAW ,Neodymium magnets,LEAR custom tuned dynamic driver per side
  • Frequency response: 10Hz~20kHz
  • Impedance : 30ohm @1000 Hz NS OFF , 16 ohm @1000 Hz NS ON (NSC-01 cable)
  • Sensitivity : 105dB @1mW NS OFF ,104dB @1mW NS ON (NSC-01 cable)

Please note that the specification is related to the default NSC-01 cable only!

LEAR NSC-03 custom tunable upgrade cable for NS-U1/NS2:



In lieu of the limitations of the NS-U1's original cables, we are designed the NSC-03 upgrade cables that enables user to adjust the tone easily.


The cable has 3 controls which gives more flexibility to the capability of the earphones.

1. The NS On/Off Switch;
2. Main channel sound tuning from balanced to a bass booster tuning;
3. NS Effect adjust switch for the width of NS effect, resulting a narrower/wider left and right channel;

Now, everyone can have their own tuning and NS style with the NSC-03!


Additional information by TheHeadphoneList :

Reviews on NS-U1 :

Reviews in Chinese :

Reviews in English

Disclaimer  :

We are deeply sorry regarding the first batch of NS-U1 (Blue, Grey & Black) having minor finishing problems which occurred on the right side of the shell,

Even thought it will not influence or it has nothing related to the overall quality  but the unperfected finishing, we have decided to offer customers who do not mind purchasing this batch of earphones a NSC-03 cable alongside with the earphones at the price of HKD$1,688. 

 *This one time offer will end as soon as the fixed batch is ready.


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