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USB+LAN Ground Conditioner


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#21 Jogar

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Posted 18 November 2019 - 08:11 PM

Some patience is required with this ground conditioner because it took several days for an improvement in SQ to occur in my system.

When I just plugged the cable in and out of both motherboard USB and JCAT LAN connectors, no immediate difference in SQ occurred and after a few days of trying I was really disappointed (to put it mildly). I actually thought that I’d wasted my money and I was going to return the cable. Just in case I missed a trick, I re-read the information on the JCAT webshop which states that improvements in SQ could take « several days to a week » to happen. Carlos also mentions something similar in his post above. So before returning the cable I thought I’d try leaving it plugged in with the system turned on permanently. About three days later (and without enthusiasm) I went back to have a listen. I must admit I was surprised because the SQ was more natural and analog. I’d never heard my system sounding this good before! Wow. How is this possible?

The improvement in SQ was so significant (especially on timbres, treble and voices which became more airy and spacious) that since it's become impossible to remove the ground conditioner. If the PC is turned off for just a short while, the beneficial effects of the cable on SQ are still preserved when the PC is turned on again which is cool.

This cable is a key part of my setup from now on and despite a bad start, I’m pleased that I figured out how to use it. Some guidance about this could have saved me time, but perhaps it’s understandable for a new type of product. My initial dismay has turned into listening joy and I’m rediscovering my albums once again. Hopefully this experience will help others. Thank you so much Marcin for this truly remarkable cable, although it must be used with the PC turned on all the time. Regards.


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#22 gonefishing

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Posted 13 January 2020 - 05:13 AM

While waiting for the USB+LAN Ground Conditioner to arrive I installed the 1 port USB firmware and WOW the improvement in SQ was significant right across the frequency range. for me this was a significant upgrade in sound. I wish I had done this along time ago, so easy to have done.

 

Really looking forward to the USB+LAN Ground Conditioner arriving. further update to come.

 

Thanks Marcin for this free firmware upgrade 

 

Cheers

John


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#23 Marcin_gps

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Posted 11 March 2020 - 02:11 PM

I made some further experiments and it seems that the biggest improvements I'm getting in my system is when the USB lead of the USB+LAN Ground Conditioner is connected to the USB port on the motherboard and the LAN lead is connected to the NET Card FEMTO port. 


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#24 mper78

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Posted 25 March 2020 - 09:49 AM

Hello all,

I have only now registered to this forum and would like to tell about my experience with jcat devices and cables. I own usb isolator, usb card femto and usb lan ground conditioner. I must say that the biggest impact on the sound is by ground conditioner. I have however found, that the best sound is when connected to the usb port on the back of my computer, and not on usb femto card. I came to this realisation after some time after i had it connected to femto card. Somehow the sound had not changed. Then I on impulse switched it to any other usb on my comp. That was a huge change. The sound became so much clearer. I cant realy explain why, but it works.
Overall, the sound is even better than I expected from my equipment.
Thanks Marcin for advice and help
Marko
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#25 Marcin_gps

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Posted 30 March 2020 - 06:34 AM

Hello all,

I have only now registered to this forum and would like to tell about my experience with jcat devices and cables. I own usb isolator, usb card femto and usb lan ground conditioner. I must say that the biggest impact on the sound is by ground conditioner. I have however found, that the best sound is when connected to the usb port on the back of my computer, and not on usb femto card. I came to this realisation after some time after i had it connected to femto card. Somehow the sound had not changed. Then I on impulse switched it to any other usb on my comp. That was a huge change. The sound became so much clearer. I cant realy explain why, but it works.
Overall, the sound is even better than I expected from my equipment.
Thanks Marcin for advice and help
Marko

 

Thanks for sharing, Marko! :) 


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#26 The Chaplin (Peter C)

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Posted 30 March 2020 - 11:21 AM

I made some further experiments and it seems that the biggest improvements I'm getting in my system is when the USB lead of the USB+LAN Ground Conditioner is connected to the USB port on the motherboard and the LAN lead is connected to the NET Card FEMTO port. 

 

Interesting. Implying you are reducing noise from your Motherboard via USB which seems reasonable and expected. Re the Net Card FEMTO grounding, I would have thought an effect should be less expected?


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#27 Marcin_gps

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Posted 30 March 2020 - 03:33 PM

Interesting. Implying you are reducing noise from your Motherboard via USB which seems reasonable and expected. Re the Net Card FEMTO grounding, I would have thought an effect should be less expected?

 

Correct. 


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#28 Carlosoptico

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Posted 31 March 2020 - 03:42 PM

Hi everyone
In my system, changing the USB cable from USB + LAN Ground Conditioner, from the JCAT USB Femto card, configured with a single port, to one of the rear USB inputs on the motherboard, has greatly improved the SQ compared to having it connected to the JCAT card. A bigger improvement than disconnecting the WLAN cable from the router for example. In addition, the improvement has been in all the sections of a listening. Improve timbres, scene location, depth, and width. It has also increased the desire to continue listening, anything, it does not matter, because an event is taking place in front of you, almost live.
My wife has been outside the house these last few days while I was listening to music. Today, an hour has passed before the end of the listening session and when it is over, he has told me that the different songs he had heard had led him to past times and that it had never happened to him or how easy the bass melody was in that Bob Marley song or the inflections of Billie Holiday, who seemed to be in front of us. It seems to my wife that it is "now" when the system has connected to the soul of music. I think so too. Are these the first symptoms associated with a 17-day confinement that make me believe that it sounds better than it actually is? Laughs....
Carlos
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#29 Ben Webster

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Posted 31 March 2020 - 05:47 PM

Hi Marcin,

 

I‘ve a dual PC-JPlay Setup with a JCat Netcard FEMTO in each PC. I don‘t use any USB-slots in the Audio-PC because of a internal RME DAC.

 

Which PC is more important regarding using the USB+LAN Ground Conditioner? Do I need two conditioner?

 

Kind regards

Ben


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#30 Marcin_gps

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Posted 01 April 2020 - 11:04 AM

Hi everyone
In my system, changing the USB cable from USB + LAN Ground Conditioner, from the JCAT USB Femto card, configured with a single port, to one of the rear USB inputs on the motherboard, has greatly improved the SQ compared to having it connected to the JCAT card. A bigger improvement than disconnecting the WLAN cable from the router for example. In addition, the improvement has been in all the sections of a listening. Improve timbres, scene location, depth, and width. It has also increased the desire to continue listening, anything, it does not matter, because an event is taking place in front of you, almost live.
My wife has been outside the house these last few days while I was listening to music. Today, an hour has passed before the end of the listening session and when it is over, he has told me that the different songs he had heard had led him to past times and that it had never happened to him or how easy the bass melody was in that Bob Marley song or the inflections of Billie Holiday, who seemed to be in front of us. It seems to my wife that it is "now" when the system has connected to the soul of music. I think so too. Are these the first symptoms associated with a 17-day confinement that make me believe that it sounds better than it actually is? Laughs....
Carlos

 

At the  end of the day, this is what matters the most - enjoyment of music. If I find myself jumping between tracks then it's a sign that sth is wrong with my system. 

 

Hi Marcin,

 

I‘ve a dual PC-JPlay Setup with a JCat Netcard FEMTO in each PC. I don‘t use any USB-slots in the Audio-PC because of a internal RME DAC.

 

Which PC is more important regarding using the USB+LAN Ground Conditioner? Do I need two conditioner?

 

Kind regards

Ben

 

Ben, definitely audio  PC as this one is  directly connected to your hifi  components.  


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#31 Thuan

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Posted 20 April 2020 - 06:30 PM

I made some further experiments and it seems that the biggest improvements I'm getting in my system is when the USB lead of the USB+LAN Ground Conditioner is connected to the USB port on the motherboard and the LAN lead is connected to the NET Card FEMTO port.


Normally I use one port on NET Card FEMTO, the other port disabled. If I am to plug the Ground Conditioner lead to that LAN port, should I enable it or just leave it disabled?

Same idea for USB ports. Sometimes I disable most of them in BIOS to optimize the server. Does it matter whether they're enabled or disabled if I am to plug the GC USB lead to it?

Thanks in advance for enlightening me.

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#32 Jogar

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Posted 21 April 2020 - 09:30 AM

Hi Thuan,

I left motherboard USB ports and second NET Card Femto port enabled when I assessed the ground conditioner. However if my understanding is correct, I think the GC could work just as well with USB and second NET Card ports disabled. Perhaps it's worth trying both configurations to see whether there's any difference in SQ - I'd be interested to find out if you do. I'm a bit reluctant to change my current system settings with the GC because the noise floor reduction obtained is absolutely fantastic. Kind regards.


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#33 Marcin_gps

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Posted 21 April 2020 - 09:39 AM

Normally I use one port on NET Card FEMTO, the other port disabled. If I am to plug the Ground Conditioner lead to that LAN port, should I enable it or just leave it disabled?

Same idea for USB ports. Sometimes I disable most of them in BIOS to optimize the server. Does it matter whether they're enabled or disabled if I am to plug the GC USB lead to it?

Thanks in advance for enlightening me.

You don't need to enable the port. Ground connection is active regardless. 


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Want to squeeze more from your PC-audio? Hear the difference with JCAT
 

#34 Thuan

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Posted 21 April 2020 - 11:35 AM

Thanks Jogar and Marcin.
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