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CJH

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  1. Sorry, my mistake (wishful thinking) I have a microRendu that only accepts 10/100. So I guess the oM won't work for me. CJH
  2. Would like to try an oM but I have never been able to get my uRendu to work with anything except 10/100 (FS-105). I have three 10/100/1000 switches and my uR will not work with them. CJH
  3. Is there going to be a version with Male C-USB plug? CJH
  4. CJH

    Glass cd's

    My recollections are from more than 15 yrs ago and are a bit sketchy. I wish Winston Ma (FIM) were available to answer these questions but sadly passed away in 2016. No mastering trickery was applied. It was simply a higher quality process of producing a CD disc. Pit errors are a result of the CD manufacturing process with a typical disc having perhaps 100-150 errors per disc. The JVC UHQCD process is a refinement of the CD manufacturing process and I believe the errors these discs averaged is around 25. The FIM glass discs averaged 4-5. Each disc included a multipage booklet explaining the process. Most of these discs were sold in the highend Asian market, but surely someone out there has one of these discs and can provide more accurate and comprehensive information. Since Reference Recordings did some of the FIM recordings, I would speculate that Tam Henderson or Keith Johnson has one or more of these discs. CJH
  5. CJH

    Glass cd's

    Glass CDs have been around for quite a while. I had the privilege of visiting Winston Ma of First Impressions Music back in the early 2000s at his home and was treated to hours of listening sessions on his exceptional audio system. He was an early promoter of the glass CDs and had a few of his recordings done as these "glass masters". He likened them to direct to disc LPs and had documentation of the lower error rate for each disc compared to even the UHQCDs. While its been a very long time, I still remember the exquisite sound of these discs. Yeah, they sounded quite a bit better. At the time I believe he was selling them for around $150 each. CJH
  6. USB in > optical isolation > USB out. Using USB in to power the first optical stage and external power for the second optical stage and USB out. Let's call it IsoptoRegen. CJH
  7. Is it possible for John S. to design a USB optical isolator using this technology? CJH
  8. Musikfan & iLguapo: Check out www.fs.com for quality modules and cables at reasonable pricing. CJH
  9. austinpop: Good question as I have tried just adding additional ethernet cables in the past (what sgr is doing) and it simply seems to confuse the switches and I loose internet connection. There has to be more to it. Let us know Steve. CJH
  10. the_doc735: Sorry, I'm old and have no idea how to make diagrams in these forums. Chris H.
  11. With renewed interest in fiber (Sonore Optical) I thought I might try some optical isolation myself (as long as it didn't get expensive or overly complex). Connections are between a computer, Netgear router and microRendu 1.3. I have tried it in the past (a couple of TPLink MC110cs) with very minor improvements. I got bigger improvements using a Netgear FS105 10/100 copper switch (seems my Rendu will not connect to 1000 mbs connection). This worked best with each network item connected to it. Plugging the computer into the router then running a single connection to the FS105 was worse. So I new I wanted to isolate the computer from the router if possible. I needed a network switch with copper connections and at least two fiber connections (one for the router and one for the computer to maintain isolation). A search on Amazon provided options. Purchased a couple TP link MC220L, a couple 1000 Mbps SFP modules (one for the router and one for the computer) along with an Aptek Gigabit switch with two optical modules and four 10/100/1000 copper connections and a couple more SFP modules along with two 1m fiber cables. Total cost was around $175--not too bad. Hooked it all together--took a while for the computer to get connected to the internet through all this new gear--but finally connected. How did it sound--it didn't. MicroRendu would not connect as I forgot to use the Netgear FS105 to slow the connection down to 100Mbps for the Rendu. With that in place all is well and sounding better than ever. Seems the fiber connection does lower the overall noise, adds a sense of solidity to instruments/voices, increases separation, increases perception of recording venue, increases the tonal individuality of instruments (listen to Coplands third or vocal pieces by Eric Whitacre or even the classic Doors-Riders on the Storm). My only cheat in this foray was the power supplies. I am a big believer in low noise power supplies, so all the network connection gear was powered by either battery or self made supplies using Paul Hynes or MPAudio regulation modules. What fun. Chris H.
  12. luisma --nice you mentioned the Ubiquiti. Just bought a similar model myself (2 fiber and 4 copper connections). I wanted 2 fiber connections in order to isolate my computer and router separately. From there it will be copper to a uR/IsoRegen. Chris H.
  13. If one sends pcm 705kHz using HQ Player with Sinc M filter, will the filter be completely discarded by the Qutest or willl there be a sonic difference?
  14. Looking to upgrade my current PC using Roon/HQP/Win10pro (i7 gen 3--doing DSD 256 upsampling OK) so I can enjoy upsampled DSD512 (22/24MHz) to a Rendu. Found this relatively inexpensive option. Please let me know if it has enough processing power--thanks. https://www.amazon.com/gp/product/B07FZMT7GS/ref=ox_sc_act_title_1?smid=A3JS2199GQLB8L&psc=1
  15. Anyone used a Topping D50 with their microrendu? CJH
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