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Waversa LAN-isolator-EXT1

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Waversa System is based in Korea, produce some of the very innovative network product for audiophiles. The latest development of lan isolator removes noise from Lan cables and provides excellent sound quality, the device is speical design with huge isolator performance. It dramatically upgrades the sound quality of digital streaming. Highly recommended to increase dynamic and details in audiophile system.


WLAN Isolater is a patented electromagnetic (Electromagnetic) technology , the removal of the RFI noise and Impluse noise coming from the cable, also revive the equipment fine sound is.




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* WLAN-isolator is nickel-plated for sound quality. Due to the characteristics of nickel plating, there may be some stains or scratches on the surface. And it may oxidize slightly black after use.





WLAN Isolator has a patented technology structure that uses electromagnetic waves to remove noise . With this structure, it is a product that focuses on removing noise generated from the LAN port and noise generated outside, and taking advantage of the musical nuances . Calling this device an "isolator" is an abstract name for its role of simply isolating noise, but the reality is not simple.





The internal wiring of the WLAN Isolator is a very thin wire of 0.1mm to 0.2mm, and all 32 points are soldered. The work is very difficult, it takes a long time to make, and it is reminiscent of the work of making a phono cartridge.



How to use

It's easy to use. Simply connect the WLAN Isolator to the upstream device with the short cable included with the main unit, and connect the LAN cable you have been using to the other port.


Network audio, computer streaming, noise, sound quality

Network audio, which uses computer streaming, becomes harsh due to noise , and above all, its musicality deteriorates. That's why digital network audio, which should be better , is less musical than CDs .

WLAN-isolator-Ext1 Electromagnetic noise

Webersa has made a lot of efforts in computer streaming to reduce the adverse sound quality effects of noise. We have launched special products such as WSmartHub, WRouter, WBridge, and WCORE that bring excellent sound quality improvement, and we also have a lineup of WVshield cables. Then, the most worrisome thing is how much the sound quality is different from WSmartHub and WRoutor that this WLAN Isolator removes network noise.

If WSmartHub brings about changes in the overall structure,
WLAN Isolator represents the sophistication inside the structure.

EMI / RFI / Impulse Noise Impluse Noise

Audio is very vulnerable to noise. There are various types of noise that adversely affect sound quality, but the noises that greatly affect computer streaming are EMI, RFI, and impulse noise .

WLAN-isolator-Ext1 Impulse noise

The main role of WSmartHub and WRouter is to block EMI noise from the cable . RFI noise that enters beyond the coating is a problem at the end of the cable and can be solved with a cable. However, no matter how much the cable is shielded, RFI noise cannot be completely blocked.


WLAN Isolater is a patented electromagnetic (Electromagnetic) technology , the removal of the RFI noise and Impluse noise coming from the cable, also revive the equipment fine sound is.

Technology to remove RFI and Impluse Noise "WLAN Isolater"

The first noticeable change in sound quality when connecting a WLAN Isolater is that the microdynamics (small sounds) are very good. The nuances of the music are clearly revived, and the singer feels more polite.



RFI noise and Impluse noise are lower energies in the higher frequency range than EMI noise. Musically, it is a higher-order overtone region.

Very quiet sounds in the high-order harmonic overtone band that could not be heard due to the influence of noise are revived, and a richer tone can be created more musically.


WLAN Isolater removes small noises such as RFIs that cannot be completely removed by electrical methods such as WSmartHub.

In other words, WSmartHub removes a lot of noise, WLAN Isolater removes even very small particles of noise, all the small sounds are revived, and the musical nuance is dramatically enhanced.




AfterDark. Baffalo BS-GS2016 x WLAN Isolator 

Sound quality improvement

  The changes in sound quality are not only general changes such as "clean", "cleared", and "hearing inaudible sounds" with noise removed, but also changes only for WLAN Isolater .

The biggest change revives the subtle sounds that were buried in the noise and could not be heard.


The small sounds, overtones, and ambience of fine particles, which were difficult to achieve digitally, are reproduced as if they were analog.

Therefore , it keeps the musicality of network audio, which has been reduced in musicality .

Another big advantage is that the sound is colored like a general noise filter, the sound is reduced and quiet, but the high range is rolled off and scraped, and the low range is cut. It means that there are no chronic disadvantages of filters such as no ultra-low range .

Rather, WLAN Isolater revives the high range , the sharpness of the sound improves by extending to the end , the low range is beautiful and sinks very comfortably , and small sounds such as reverberation and ambience are revived, so the sound stage also comes out three-dimensionally . ..


WSmartHub has a larger sound stage, focusing, quietness, clarity, cleanliness , fineness and sophistication , and WLAN Isolator can express smaller and finer sound particles . If you connect a WLAN Isolator, the microdynamics will be much better .


The sound that was ringing in one mass is separated into two or three , the change in the micro region of the boundary between sound and sound is remarkable, and fine sound particles swim in the created spatial region, and the sound It feels like you're free from bondage .


The density in the sound image is densely increased, the color of the sound is revived, the breathing sound of the singer, the lingering sound that continues to the end improves the sense of space and air, the vivid tone becomes denser, and the digital and musical nuances The sensibilities are revived, and the music becomes more musical.

How to use?

Method 1: Connect the WLAN isolator to the LAN port of the upstream device.


Method 2: Connect the WLAN isolator to the LAN port of the DAC.


Method Two

Connect the WLAN Isolator to the upstream LAN port.
Then connect another WLAN Isolator to the DAC's LAN port.
The installation cost will increase, but the performance of the WLAN Isolator will be most effective.


W Smarthub x1 + WLAN-isolator x2

  1. Connect the WLAN Isolator to the upstream LAN port.
  2. Connect to WSmartHub.
  3. Connect another WLAN Isolator to the DAC's LAN port.

Dynamic range, microdynamics, and musical nuances are all revived, achieving a level of sound quality that is difficult to experience with digital sound sources.


WLAN-INT module explained by Shin Jun-ho


The core of the product is the WLAN-INT module (INT stands for Interconnect), but it needed a more detailed explanation. I had to convince myself more than anyone else.


-Is it a transformer concept installed in some brands of LAN switching hubs?


Shinjunho representative: different. The concept itself is different.


-Then, what is the principle of removing noise?


Representative Shin Jun-ho: I can't explain everything because it's a patent, but I can explain how this module forms an electric and electromagnetic fields to eliminate noise that interrupts the signal passing through itself. A lot of RFI noise comes in with a LAN cable, but this cannot be removed with a conventional low-pass filter. This can also remove the noise contained in the signal itself.


-Is it not only the electromagnetic noise but also the noise of the signal itself?


Representative Shin Junho: That's right. Digital signals generate new noise during the transmission process. Noise due to mutual interference. The noise can be severe, especially if you have multiple pairs of data cables.


-Looking at the LAN noise isolator, a short LAN cable is set. Do you connect this cable to the LAN terminal on the network device side or the audio device side?


Representative Shin Junho: It depends on where the noise is generated. If you have many network devices, connect the short cable that came with them. In a word, connect the WLAN-Isolater to the side closer to the noise. That way you can get rid of the noise faster. Therefore, it is not recommended to attach it to the WCore side (with less noise). Because there is no difference. On the other hand, if you connect a long LAN cable closer to the noise, the cable itself will cause jitter.


LAN cable and electromagnetic noise

In summary, the WLAN-Isolater is centered around the LAN noise isolator module, which "forms an electric and magnetic field to remove RFI noise coming in on the LAN cable and noise created by the digital signal line itself." Will do it.


Let's check each one. It can be said that electromagnetic waves are widespread in our daily lives. In Europe and the United States, the phenomenon in which the original signal is disturbed by such electromagnetic waves is called electromagnetic interference, that is, EMI (Electro-Magnetic Interference). Especially in the case of audio, it is called EMI's normal electromagnetic noise because it handles a frequency band that is very sensitive to the human ear. We see the interference caused by electromagnetic waves as a kind of noise.



Radio frequency interference, or RFI (Radio Frequency Interference), refers to when EMI noise occurs in the radio frequency band (10kHz to 1GHz). The RFI noise of audio is fatal because this band affects not only the audible range (20Hz to 20kHz) but also the overtone range (6kHz to 20kHz) that determines the timbre and spatial feeling of the instrument. Bands that are safe from RFI noise include microwaves (1GHz to 100GHz) and infrared rays (300GHz to 430THz) that are unrelated to audio and video signals.


And, as is well known, a typical solution to block these EMI and RFI noises is shield. However, Webersa explains that not only this shield but also electric and magnetic fields are used to block RFI noise. Therefore, the author speculates that Webersa's LAN noise isolator module is a kind of active shielding that removes electromagnetic noise coming in from the LAN cable.


The basis for this estimation by the author is the photograph published by Webersa. Eight very thin coils are connected to each of the two LAN ports of the WLAN-Isolater, and each coil goes around a disk-shaped module and is output to another port. In other words, these coils wound around the disk act as a kind of solenoid coil to form an electromagnetic field, and this electromagnetic field rides on the coil and "cancels" the electromagnetic noise that has "already" entered. I wonder if there is.




On the other hand, the reason why eight coils are assigned to each LAN port inside the device is that there are eight wires in the LAN cable. There are 4 pairs of plus and minus respectively.




In the WLAN-isolator audition held in the main audition room of HiFi Club, I used the combination of WRouter and WCore, MSB Premier streaming DAC, and Macintosh C1100 and MC611 for prepower.

The speaker is the avant-garde Trio Luxury Edition 26.

For the connection position, referring to the words of Shinjunho, I connected a short LAN cable of WLAN-isolator to the Ethernet port of the premier streaming DAC.

Diana Krall-"S Wonderful-Live In Paris

Diana Krall --S Wonderful Live In Paris

First, I heard it with the isolator turned on. The distance between vocals and musical instruments and the resolution are good, and the stage is expanded very widely. The sound itself is very fresh and lively. If you remove the isolator and connect the existing LAN cable directly to the DAC, the stage will be narrow and cramped as if it were a separate recording version.


The keyboard touch sound of the right hand of the piano is also not very clear. Reconnecting the isolator will finish the rhythm and face and even increase the dynamic range. Above all, I can hear the guitar, percussion, and vocals well.
I reduced the harm of electromagnetic noise when I auditioned a LAN cable with a well-shielded shield before, but was there such a big difference? Although it is an abstract word, it seems that the musicality has increased and the difference between strength and slowness has increased.

Keith Jarrett --Part II-A-The Koln Concert

Keith Jarrett --Part II-A The Koln Concert

It's a wonderful piano sound that you will fall in love with. The overtones are rich and the background is quiet. It feels like the playback sound is organized as a whole. All kinds of sounds spring up from a single piano so that it can be called a "sound laboratory".


The WLAN-isolator is more effective than I expected. As I listened further, the dense atmosphere that filled the stage disappeared, and the curtain in front of the stage changed. Keith Jarrett's moaning only sounds weak. I think it's because the noise floor has gone up. When the isolator is turned on again, the overtones of the piano become richer and of course very soft. It makes me feel that the sound when not in use is very rigid. Each sound is expressed in detail.

Brahms Piano Trios

Maria Joao Pires, Augustin Dumay, Jian Wang --Piano Trio No.1 Brahms Piano Trios Nos.1 & 2

When I listen to it with the isolator turned on, a really quiet background unfolds. It's been a while since the texture of the cello sounds so lively. The violin that appeared subsequently gives a rougher and more linear sound than the cello.


When the isolator is pulled out and the LAN cable is directly connected, the cello becomes thin and there is no thick texture. It feels like both sides of the stage have been cut off. The recording is in the auditorium of the University of Munich, but it is regrettable that the reverberation is small. When the isolator is turned on again, the fricative sound of the cello bow and strings and the violin-specific sound can be heard better. Whether or not the stage can be expressed widely, I think that is the big difference with or without an isolator.

Mozart Requiem

Claudio Abbado, Berliner Philharmoniker Dies Irae, Tuba Mirum Mozart Requiem

When the isolator is surely put in, the energy of the chorus is remarkably noticeable, and the sound bleeding phenomenon is small. It is also when the isolator is introduced that the detailed pronunciation of the members is often expressed. In other words, it is proof that the resolution and SNR have increased.


If you unplug the isolator and connect the LAN cable directly, the sense of distance between the front and back of the stage will decrease in "Dies irae / Dies irae", and the tenor tone in "Tuba mirum / The sound of a strange trumpet". Is thin. When the isolator is turned on again, the choir that seems to be singing with one body changes to people with various voices and vocalizations. Each member is represented. For the same reason, the baritone sounded clearer in "Tuvamirum". The soprano's voice became more glossy and the background became more quiet.



General comment


After reviewing various audio accessories, I realized that the effect is very large when electromagnetic noise is surely removed. As far as networks and LAN cables are concerned, for example, nuprime's switching hub Omnia SW-8 and Siltec's LAN cable Royal Signature Network Crown have achieved brilliant sound quality improvements. It is beyond imagination that electromagnetic noise deteriorates sound quality.

Webersa's WLAN-isolator also removed the electromagnetic noise that came in on the LAN cable, showing a clear effect of improving sound quality. The biggest change was that the stage background became quieter and each sound became cleaner, and then the sound stage became wider and the sense of space increased, and it was also noticeable that the energy, especially the energy in the low frequency band, increased. It was. Significant changes have occurred in many more respects.


In addition to this, there is no need for a separate power supply, and there are also advantages such as the fact that the ON position can be freely selected according to the noise environment, such as between the LAN port and router on the network device side, or between the router and device. .. Now that streaming sound sources have become mainstream and LAN cables have become essential, it seems that Webersa has done the job of solving the problem again. I would like to seriously recommend a comparative audition.






Amp: Goldmund 27+ EVO Preamp, Goldmund 29M Power Amp, Goldmund AC-Curator

DAC: Goldmund 21D Convertor Mono Block x 2 

Digital: Mutec MC3-USB,  AfterDark. Giesemann OCXO 10M Master Clock Giesemann EVA 

Playback: Goldmund PH3 Phono Amp, Linn LP12, Rovox PR99 MKII Open Reel

Digital Player: AfterDark. Rosanna Network Bridge x Roon Bridge OCXO Edition x JS-2

Dealer: SMSL, Gustard, Cybershaft, Pachanko Studio, UpTone Audio, Waversa, DELA

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  • 2 weeks later...

The Waversa Lan Isolator is passive device, qutie a different design or approach to deal with the isolation from EtherREGEN.  We experienced the Waversa Lan Isolator is more natural sounding while optimise the details from background. 



Amp: Goldmund 27+ EVO Preamp, Goldmund 29M Power Amp, Goldmund AC-Curator

DAC: Goldmund 21D Convertor Mono Block x 2 

Digital: Mutec MC3-USB,  AfterDark. Giesemann OCXO 10M Master Clock Giesemann EVA 

Playback: Goldmund PH3 Phono Amp, Linn LP12, Rovox PR99 MKII Open Reel

Digital Player: AfterDark. Rosanna Network Bridge x Roon Bridge OCXO Edition x JS-2

Dealer: SMSL, Gustard, Cybershaft, Pachanko Studio, UpTone Audio, Waversa, DELA

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