Sunday, July 5, 2015


Audio Grade Switch

Handcrafted in Taiwan

Audio grade switch improve the on line streaming ( YouTube, Tidal …….),
Also NAS , dual PC mode playing.

2 switchs for double run  improve much more sound quality than single run.
Highly recommend to use double run.

Lay out of the single run

Layout of the double run,
Audio grade should be as close as possible to the Server or Streamer .

Lan cable make difference.

Recommend use the better Lan cable with # 1 , 2 & 3 ,

Most important Lan cable is the one from second switch connect to the Server.

Live Recording Demo Video with no switch to 4 x switch Run

D-Link 8ports 10/100/1000Mbps TCXO Switch

Modified with PPA low jitter TCXO module & audio grade capacitor.

Power require 5V/ 1A min.,
Bundle with 5V/ 1A SMPS AC adapter.
Recommend to use 5V / 1.5A LPSU for the better sound quality.

Offer 1 year warranty,
Burned by higher supply voltage or disassemble is not include.
Warranty stick broken is no warranty also.

US$249 including free shipping world wide,

Please email for the paypal invoice.


OCXO dual switch for Audio

Newly developed in 2019

This dual switch with separate switch in a chassis,
Both re-clock by PPA OCXO module.
Top grade sound quality for the hi-end  audio system.

Sound quality beat over any audio grade switch.

 Crystal tweaking OCXO module

Fair tweaking regulator module for the OCXO module

Free 20cm TZ YUN Lan cable for switch A & B link


Offer 1 year warranty,
Warranty stick broken is no warranty also.

$USD1190 including free shipping world wide

Please email for the paypal invoice.

For the Extremely Streaming User 
Twin OCXO duals switch as 4 X run

PPA FC10 Server

Twin PPA OCXO Dual Switch

User's  Feed Back
Feed back 1: To summarize...left the switches and amps running on standby overnight .. Melody Gardot and Mark Knopfler was just amazing on Roon streaming off the internet. Had a very special air around the voice just like the LPs...better than my CD player! The PPA cables switches and streaming by far is the very best for the money spent. Feed back 2:
Dual switch (single) slightly better than 2x OCXO lite....with same power cables and same LAN cables...
of course it all comes down to the power regulators that i was using before

so it is difficult to compare

overall the results is more depth and instrument separation and slightly better dynamics

new OCXO switch still only 30 minutes running
so it will get much better in time
already i like it though
still not tested second dual switch
now after 1 hr more body the new switch ...also i connected ground and even more body !

bravo KaiYu !

now 2nd dual connected !
i hear more air around instruments....the instruments and voices have a more solid presence in space and better defined
overall more 3D
and slightly more body so far...2nd switch only 20 minutes on
and better resolution !

overall : i am very happy with my purchase !
and lower noise floor as well KaiYu..
the more i listen the more excited i become !


TZ YUN Red Lan cable,
60cm $USD99,
1.2M $USD199.

Please email for the paypal invoice.


OCXO Quad switch for Audio
                   Newly developed in 2020

This quad switch with 4 separate switch in a chassis,
All switch re-clock by PPA OCXO module.
Top grade sound quality for the hi-end  audio system.

Sound quality beat over any audio grade switch.

Offer 1 year warranty,

Warranty stick broken is no warranty also.

$USD1990 including free shipping world wide


  1. This comment has been removed by a blog administrator.

  2. Hello Paul,
    Glad to know about these gadgets. I think use of Ethernet card is very low now a days. BTW can I buy these stuffs from target online store because I own a gift card of that store? If these gadgets are available on that store please let me know.

    Thanks for the share :)

  3. What is the difference between v2 and v3 series?

  4. Can I have your actual product model number?
    I browse about the web site of Zyxel, what is the series your company on sale?

  5. What is the difference between v2 and v3?

  6. v2 and v3 with different layout but with same sound quality


  7. Your message: Hi,i wish to know the audio grade switch of Zyxel. Since i am a customer in Hong Kong. Can I buy it and deliver to Hong Kong?If yes, how much its cost for shipping? Besides, what is the power input? Hong Kong is 220v ~240v is that also compatiable for using in Hong Kong?i dont mind to replace a suitable power plug for local use.
    Finally, which is the audio grade model and the difference between 5 port or 8 port ?
    Any dealer information in HK?

    1. Honk Kong user please contact drugaudio,

  8. What is the difference between GS 105S v2 and ES 105A v3?? What is the price of these??
    Which one is audio grade?

  9. Do you have the model GS105B v3??

  10. I really enjoyed reading your article. I found this as an informative and interesting post, so i think it is very useful and knowledgeable. I would like to thank you for the effort you have made in writing this article.

    1. Hi, Sarah
      Thanks for your comment.
      I have to write for all customers to be aware of the version of the switch if you are a audiophile listener. You may request an excellent sound quality that a high performance switch should do. So please choose a gigabit (GS) model together with v3 (OXOC module) or above.

  11. Buy products or sale your products at online shooping bazaar

  12. Dear Funny Mobile Video, million thanks

  13. Hi Paul,

    I just sent you a PP request for the switch. Would this piece or a similar piece be useful with your switch.



  14. Easy readable post with many important information. I must back again for something new. Keep up posting and share with us. Thanks for your great staff....
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  15. Bought a OCXO switch with LPSU. The delivery was fast in 4 days after placing order. Thank Paul for his guidance on how to setup the switch closer to the NAS to achieve better sound quality. I am amazed by the improved sound quality after installing the Switch.

  16. Dear Paul

    I am customer from Hong Kong. Can you give me some details on purchasing this switch.

    1. Hong Kong users please contact Drugs Audio,

  17. Hello I'm am very excited to receive the clock for 10 MHZ. Can you provide the tracking to my e-mail. Thanks, Steve

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  29. I am interested with the switch for worldwide sale. May I have the pay link?

  30. Dear Paul

    Please provide me the pay link.

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  35. Is the internal power supply a switch mode power supply? Can it accommodate an external Linear Power Supply? If so what are the VDC and max current for the external supply?


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