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  • Mike's Avatar
    Today, 12:02 PM
    Mike started a thread Magico A1 in silver in Magico
    Sent from my iPhone using Tapatalk Pro
    0 replies | 64 view(s)
  • jmusica's Avatar
    Today, 11:39 AM
    jmusica replied to a thread Lumin U2 Mini in Lumin
    Agree with Peter and dminches RAID is a great fault tolerant feature, but itís not a substitute for storing a backup offsite.
    70 replies | 7280 view(s)
  • Puma Cat's Avatar
    Yesterday, 11:32 PM
    CGC cable from Altaira to the Typhon T2 ground terminal. Then, a "jumper" CGC cable from T2 to the Denali terminal.
    17 replies | 802 view(s)
  • Mike's Avatar
    Yesterday, 10:53 PM
    Love my copy! Crazy expensive, but nothing compares. Sent from my iPhone using Tapatalk Pro
    1 replies | 84 view(s)
  • Puma Cat's Avatar
    Yesterday, 05:22 PM
    There ya go.
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    Yesterday, 04:21 PM
    Can you turn off the display on the Rose while listening? You can do this on the Aurender N20, and turning it off results in an improvement in audio quality.
    248 replies | 23036 view(s)
  • jmusica's Avatar
    November 26, 2022, 10:13 PM
    Tl;dr way too much acrimony stubbornness and judgement in here. Came to ask the only important question: when Class A amps are outlawed, will I have to elude the Eyes on Sundays and go far outside the wire to my uncleís country place that no-one...
    218 replies | 10452 view(s)
  • Puma Cat's Avatar
    November 26, 2022, 02:03 PM
    From looking at the product info, Denali V2 + Typhon T2 were designed to provide performance equivalent to Everest using the specifically-designed umbilical, you don't need to use a dedicated power cord for each. A key function of connnecting the...
    17 replies | 802 view(s)
  • Puma Cat's Avatar
    November 26, 2022, 12:34 PM
    For ripping CDs on the Mac platform, I'd recommend using the free app, XLD. I've found it produces rips that sound the best. Under the CD rip tab, use the XLD Secure configuration with AccurateRIP turned on. You can use any CD drive to rip using...
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 26, 2022, 12:18 PM
    That's because of your Lumin T2 I would think. I'm finding that "descriptors" traditionally used for "audio gear" don't really apply with Lumin; rather descriptors for fine musical instruments or musical artists (e.g. Patricia Barber's incredible...
    248 replies | 23036 view(s)
  • jmusica's Avatar
    November 26, 2022, 11:20 AM
    Have you compared playing a CD to streaming (same album on Qobuz, etc)? Maybe thatís close enough to simplify things. I find Qobuz close, the same, or better (than ripped CDs) depending on the album (and probably the CD I ripped from).
    248 replies | 23036 view(s)
  • jmusica's Avatar
    November 26, 2022, 10:09 AM
    Why not just rip the CDs? Hard to imagine the sound of a spinning disc will be different/better enough to warrant going through that extra trouble. And, you could sell the Wadia.
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 26, 2022, 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.
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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.
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    27 replies | 980 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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,...
    9 replies | 9139 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    27 replies | 980 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 02:33 AM
    Okay, thanks.
    27 replies | 980 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 01:49 AM
    Thanks, Peter, I will look into it. Cheers.
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 25, 2022, 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...
    248 replies | 23036 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...
    248 replies | 23036 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...
    248 replies | 23036 view(s)
  • Mike's Avatar
    November 24, 2022, 04:59 PM
    Sent from my iPhone using Tapatalk Pro
    5858 replies | 599655 view(s)
  • Mike's Avatar
    November 24, 2022, 04:16 PM
    Sent from my iPhone using Tapatalk Pro
    5858 replies | 599655 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...
    248 replies | 23036 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...
    248 replies | 23036 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...
    248 replies | 23036 view(s)
  • Puma Cat's Avatar
    November 24, 2022, 03:07 PM
    Oh, you'll find out...👍
    248 replies | 23036 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.
    27 replies | 980 view(s)
  • Mike's Avatar
    November 24, 2022, 02:58 PM
    Yes, itís from a digital DSD file. Yes, it sounds great. Better than my original? Yes. Sent from my iPhone using Tapatalk Pro
    5858 replies | 599655 view(s)
  • jmusica's Avatar
    November 24, 2022, 11:25 AM
    This is the heart of it. Follow this advice, and Iím very confident youíll 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 havenít seen you here for a while,...
    248 replies | 23036 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 ďwhy?Ē They said ďfor environmental reasons.Ē Letís hope they have a change of heart and we see more great class A amps from them in the future. Not...
    218 replies | 10452 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:
    27 replies | 980 view(s)
  • Puma Cat's Avatar
    November 23, 2022, 09:51 PM
    Michael, did you mean a "ground hub", perhaps? ;)
    27 replies | 980 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,...
    27 replies | 980 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...
    248 replies | 23036 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 | 5938 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....
    248 replies | 23036 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"...
    248 replies | 23036 view(s)
  • Mike's Avatar
    November 23, 2022, 12:37 PM
    Very nice! Iíll finish watching this weekend. Sent from my iPhone using Tapatalk Pro
    6 replies | 205 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...
    248 replies | 23036 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 | 5938 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...
    248 replies | 23036 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....
    248 replies | 23036 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.
    248 replies | 23036 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.
    248 replies | 23036 view(s)
  • Mike's Avatar
    November 23, 2022, 01:06 AM
    We show them Class D, and they arenít interested. Class D isnít new. The second coming of class D has been predicted for years. It just hasnít caught on other than among the DIY crowd looking for a small amp for cheap. Look at Rowland. Jeff...
    218 replies | 10452 view(s)
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About jmusica

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About jmusica
Location:
Tampa

Signature


Lumin X1 > Boulder 1161 > Scansonic MB3.5 B

Interconnects: HiDiamond Genesis Big XLR
Speaker Cable: Zu IBIS
Ethernet: SOtM sNH-10G switch / Wireworld Platinum Starlight 8 Ethernet (Lumin L1) / Owens Corning OS2 SM Fiber (Lumin X1)
Power Conditioning: Ayre L-5xe Line Filter (amp, X1) / Keces P3 LPS w/ Uptone Audio Saphire DC cable (L1) / SOtM sPS-500 (switch)
Power Cables: Shunyata, Transparent
Music Source: Lumin L1 NAS / Qobuz / Roon

Tweaks: Artesania Audio damper | Shakti Air | Shakti Onlines | Synergistic Big MIG footers | Alto-extremo Lyd footers | Ginko Cloud 15 (X1) | IsoAcoustics Gaia II

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