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  • Puma Cat's Avatar
    Today, 03:57 AM
    Hi Peter, I was able to find LC-LC single-mode 9/125um Corning duplex fiber from LanShack. 30M is only $38. I'm going to order some. Thank you for the recommendation.
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    Yesterday, 08:36 PM
    It's accurate that digital is prone to the influence of many different noise factors, some, but not all of which, are vibration, cables, power, etc. I don't agree about fiber, but whatever floats your boat. Lest we forget, this is just a hobby...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    Yesterday, 05:51 PM
    The other switch to consider is the SOtM sNH-10G. They also have two optical transceiver SFP cages. You can also get them with the SOtM SCL-EX clock board for an extra $700; the SOtM SCL-EX clock board is really an excellent clock.
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    Yesterday, 05:40 PM
    Yes. That was one of the principal reasons for buying it. EtherREGEN in remote server room >fiber cable to main audio rack->Finisar optical transceiver in SFP cage of P1 I would invest in the best (highest level) NR Shunyata NR power cords...
    25 replies | 853 view(s)
  • NorthStar's Avatar
    Yesterday, 04:38 PM
    Canada lost its first match against Belgium. World Cup 2022: What Canada learned in Belgium loss ahead of key Croatia game Croetia is next, and I'm not proud of the Canadian coach. John Herdman Croatia comment Canada FIFA World Cup Qatar | TSN...
    17 replies | 339 view(s)
  • Puma Cat's Avatar
    Yesterday, 02:23 PM
    Correct. And a signficant proportion of the "power line noise" in our audio systems comes from the full-wave bridge rectifier power supplies in...the components themselves. Many folks forget it's AC...alternating current. The current goes both ways,...
    7 replies | 9008 view(s)
  • Puma Cat's Avatar
    Yesterday, 02:10 PM
    I only own one Sigma NRv2 PC, and it is used for the amp, so it will be staying. I'm using an Omega QR-s for the P1, which is frickin' amazing. The only PCs I plan on selling at this time are my two Alpha XC PCs used For my First Sound preamp. I...
    25 replies | 853 view(s)
  • Puma Cat's Avatar
    Yesterday, 01:48 PM
    Good info for reference. Thanks. Just want to be sure my findings and experiences with ER are not mis-construed nor mis-understood. ER was, iMHO, a veritable breakthrough product in 2019 and demonstrated first-hand how important a good Ethernet...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    Yesterday, 01:07 PM
    I just try work as best as I can to configure the system based on an understanding of science, engineering, and data. Sometimes, DOEs can help with that. For digital audio, it's primarily about 1) removing noise and 2) optimizing signal. It's ironic...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    Yesterday, 02:33 AM
    Okay, thanks.
    25 replies | 853 view(s)
  • Puma Cat's Avatar
    Yesterday, 01:49 AM
    Thanks, Peter, I will look into it. Cheers.
    226 replies | 22222 view(s)
  • NorthStar's Avatar
    Yesterday, 12:54 AM
    At high altitude where there's more snow in many places the low frequencies are affected. At low altitude near the ocean the cables are affected, so is the sound too. What's the ideal altitude and temperature for top notch sound from highest...
    14 replies | 584 view(s)
  • NorthStar's Avatar
    Yesterday, 12:41 AM
    A game-changing new hybrid EV battery recharges in only 72 seconds In comparison with mobile phones ... The world's top 10 fastest charging smartphone list | Blackview Blog
    0 replies | 67 view(s)
  • Puma Cat's Avatar
    Yesterday, 12:09 AM
    Don't get me wrong about ER. I think it represented a breakthrough product when it debuted and it really demonstrated the importance of the Ethernet switch for music streaming application in high-end audio, especially when considering the absolute...
    226 replies | 22222 view(s)
  • Paul's Avatar
    November 24, 2022, 11:06 PM
    Not much changed, but I updated to the new “Nickel” finish ( from Champagne )of Western Electric 91E. I really love this integrated amp and just ordered the 16-ohm transformer bloc to match my 18-ohm Avantgarde and 15-ohm Falcon Gold badge....
    425 replies | 125087 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 10:58 PM
    I skipped those items out for a number of reasons, most of which was the complexity, and most significantly, the ability to reliaby and predictably connect everything together, and always have it work. For example, one of the specific issues I had...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 10:35 PM
    Yep, that's the TP-Link FMC to start with. You can also use the TP-Link optical transceiver you linked to above, but the Finisar one sounds better. You should be able to find the Finisar from other sellers, if don't want to go via an Amazon private...
    226 replies | 22222 view(s)
  • Mike's Avatar
    November 24, 2022, 04:59 PM
    Sent from my iPhone using Tapatalk Pro
    5858 replies | 599228 view(s)
  • Mike's Avatar
    November 24, 2022, 04:16 PM
    Sent from my iPhone using Tapatalk Pro
    5858 replies | 599228 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 04:02 PM
    The length has nothing to do with it, it's the physics that's important. Yep, you can start off using the TP-Link single mode FMCs that use a standard LC/LC SFP cage to get started. Be sure to get the Finisar optical transceiver I linked above and...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 03:53 PM
    Yes, absolutely. So, just do that, then. The length is not the key factor, the key factor is that the optical cable will not pass the high-source impedance leakage current and the copper Ethernet will. While it's optimal to place the music server...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 03:14 PM
    Not sure why you can't run optical in your house? LC/LC fiber is really thin and really easy to dress and run, much easier than Ethernet. It can be run along or on top of wainscoting using little 3M Command Strip plastic cable clips. And it's...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 03:07 PM
    Oh, you'll find out...👍
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 03:06 PM
    Yes, it's wonderful. I listened to it twice through last night. Going to order the CD, rip it, and put it on the server hard drive.
    25 replies | 853 view(s)
  • Mike's Avatar
    November 24, 2022, 02:58 PM
    Yes, it’s from a digital DSD file. Yes, it sounds great. Better than my original? Yes. Sent from my iPhone using Tapatalk Pro
    5858 replies | 599228 view(s)
  • jmusica's Avatar
    November 24, 2022, 11:25 AM
    This is the heart of it. Follow this advice, and I’m very confident you’ll hear improvement. Also, Puma, agree about the 1.5M ethernet length; I recall reading a lot about that now you said it. Feel like I haven’t seen you here for a while,...
    226 replies | 22222 view(s)
  • Mike's Avatar
    November 23, 2022, 11:22 PM
    Just to clarify, months ago when Luxman discontinued all their Class A amps, I asked Luxman “why?” They said “for environmental reasons.” Let’s hope they have a change of heart and we see more great class A amps from them in the future. Not...
    211 replies | 9367 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 10:20 PM
    Ha! No worries! :lol: Listening to this right now, streamed from Qobuz. Ray Brown & Gene Harris, Live at the Loa Summer Wind. OMG. :woot:
    25 replies | 853 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 09:51 PM
    Michael, did you mean a "ground hub", perhaps? ;)
    25 replies | 853 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 09:41 PM
    I would agree, on the whole. While the P1 audibly sounds better using the native Lumin app, for me what is practically significant (and practically significant is generally all that matters in the real world) is that the P1 is very engaging,...
    25 replies | 853 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 04:38 PM
    Cool. If I may make a suggestion, just map out a clear evaluation plan beforehand and be systematic. I was a professional scientist my entire career, and part of a good experimental plan is to establish a "datum" as the basis for experiments, and...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 03:32 PM
    Yeah, that's a great way to start. I have a couple Delta and Venom CGCs, and least for 1M runs, say, there really isn't much in it between them. The jump to Alpha is quite a bit bigger improvement. That's why I would suggest working in three main...
    109 replies | 5848 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 03:25 PM
    The Supra Cat 8 is quite a good cable for it's price. It has an "energetic and kicky" quality to it that makes it fun. It kinda reminds me of Rega P3 TTs in that regard. Just be sure to use with gear that is not too aggressive or hot on the top end....
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 02:48 PM
    The brief answer is that installing a run of optical fiber will make a noticeable improvement audio quality because optical will not pass a specific class of a noise component, called high-source impedance leakage current (current requires a "metal"...
    226 replies | 22222 view(s)
  • Mike's Avatar
    November 23, 2022, 12:37 PM
    Very nice! I’ll finish watching this weekend. Sent from my iPhone using Tapatalk Pro
    6 replies | 190 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 03:02 AM
    Supra Cat 8 is better "bulk cable" for audio streaming. Sounds better. Belden is really bright and fatiguing...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 02:43 AM
    I would probably go with DAC and EtherREGEN for the ground cables of the highest specification. This is because ground-plane noise plays more of a role in "digital-domain" devices. But the pre may also be a good alternative to the DAC. The nice...
    109 replies | 5848 view(s)
  • NorthStar's Avatar
    November 23, 2022, 01:46 AM
    Here, a fresh analysis from today, between the iPad 9th gen (2021), iPad 10th gen (2022), and iPad Air (2022) iPad 10 vs 9 vs iPad Air: How the lineup compares - 9to5Mac Pick the one for your own personal use and budget. The best processor is...
    48 replies | 1812 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 01:41 AM
    I did a comprehensive, professional-level competitive benchmarking (I used to do this kind of work professionally) on Ethernet cables back in 2019 when I was implementing my Ethernet/optical streaming set-up. This competitive benchmarking included...
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 01:24 AM
    That's close, J, but it's very important the Ethernet cables to be a minimum of 1.5M in length, not shorter than that. Even if the actual run is shorter than that. This is to minimize the impact of reflections on the cable that cause timing errors....
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 01:17 AM
    You don't need multi-mode for home audio applications. I've been using a single-mode LC/LC optical-fiber set-up for over 3 years now....I can tell you guys exactly how to do this effectively.
    226 replies | 22222 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 01:11 AM
    I've explored this territory thoroughly, in-depth and detail in 2019. YES. Would you like 1) the brief reason why or 2*) the "MSc. engineering graduate student-level" reason why? 'Cause I can provide both. Just let me know. Cheers.
    226 replies | 22222 view(s)
  • Mike's Avatar
    November 23, 2022, 01:06 AM
    We show them Class D, and they aren’t interested. Class D isn’t new. The second coming of class D has been predicted for years. It just hasn’t caught on other than among the DIY crowd looking for a small amp for cheap. Look at Rowland. Jeff...
    211 replies | 9367 view(s)
  • NorthStar's Avatar
    November 23, 2022, 12:00 AM
    Dominique Fils-Aimé / 'Rise' 👌 from the album 'Nameless'
    4 replies | 246 view(s)
  • NorthStar's Avatar
    November 22, 2022, 11:19 PM
    Streaming time ... True, it's for lazy people who don't like to exorcize every twenty minutes to flip the record, or fifty minutes to eject and load another SACD, or change the Reel. Plus that big bright display with clear info of what and...
    4 replies | 246 view(s)
  • Puma Cat's Avatar
    November 22, 2022, 10:35 PM
    I'm presently listening to a wonderful Philips LP of Arthur Grumiaux playing Vivaldi on his Guarneri violin, Rose, the Koetsu Urushi Vermilion MC cart going from the Michell's SME V to the EAR 324 phono stage and from there via RCA IC's to the P1's...
    25 replies | 853 view(s)
  • Mike's Avatar
    November 22, 2022, 07:45 PM
    For sure Jim. The first tip is working with a dealer like myself who will be sure it’s the right speaker for your room and any limitations you might have. Too many dealers are like “yeah, yeah, yeah, get the bigger speaker!” When they know it will...
    7 replies | 346 view(s)
  • NorthStar's Avatar
    November 22, 2022, 07:44 PM
    :D Buffalo, many audiophiles live there? In the Winter I like 61°F, the same as Brian. In the Summer I cannot get below 72°F. Snow we don't see much on the Island, and when we do it doesn't last long, 2-3 weeks at most. I think it has...
    14 replies | 584 view(s)
  • Mike's Avatar
    November 22, 2022, 07:42 PM
    Mike replied to a thread Nordost vs Shunyata in Cable Reviews
    Where are you located. You really want Odin 2. Odin 2 is such a big improvement over Odin 1. Sent from my iPhone using Tapatalk Pro
    11 replies | 397 view(s)
  • Mike's Avatar
    November 22, 2022, 07:40 PM
    Agreed. We love the P1. It got heavy demo use today! Sent from my iPhone using Tapatalk Pro
    25 replies | 853 view(s)
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    You must think I'm someone else. I'm Rex. Seattle. I see you around. Thought I reach out for no real reason.
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    I think Vutran is full of it. He said he returned the Ether Regen. Sound like he may still have it.

    He wont talk about the Ansuz. Makes me wonder if he ever heard one.
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    How you doin' Stephen?

    Bob
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About Puma Cat

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About Puma Cat
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Science, photography, audio, theoretical physics
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Retired Molecular Biologist

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