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Couple more premium CAT-7 cables, for those curious.
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Posted on July 29, 2015 at 13:52:42 | ||
Posts: 7181
Location: NJ Joined: September 20, 2006 |
Besides Audioquest and Supra, mentioned in M. Lavorgna's post below, I found couple more "outrageously" priced CAT-7 cables, produced by the companies associated with audio:
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RE: Couple more premium CAT-7 cables, for those curious., posted on July 29, 2015 at 14:12:27 | |
You can also buy the AQ cables from Amazon which gives you a 30-day trial period. |
RE: Couple more premium CAT-7 cables, for those curious., posted on July 29, 2015 at 14:28:13 | |
Posts: 4585
Location: New York City Joined: August 24, 2012 |
I did not know that. Thanks. |
I going to wait for Cat 9 ...................nt, posted on July 29, 2015 at 15:26:00 | |
Posts: 18251
Location: Minneapolis - St.Paul Area Joined: September 2, 2000 Contributor Since: May 16, 2021 |
nt
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RE: Couple more premium CAT-7 cables, for those curious., posted on July 30, 2015 at 03:17:50 | |
Posts: 2424
Joined: July 11, 2007 |
If you start playing around with ethernet cables, you might also start playing around with the power supplies of your router and the routers itself. Been there done that. You can also hook up a one-foot cable to a small router which acts as wireless bridge or use an active ethernet-hub right in front of your transport. Don't forget to power that router or hub properly. It's gonna be a never ending story. Everything can make a difference as long as we have poorly implemented DAC interfaces out there.
Most of what's written over there is still valid. The "unshielded" Meicord cables did a great job in my case. Good luck.
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DSD, posted on July 30, 2015 at 23:45:45 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
impulse reponse and lack of a brickwall filter play their parts |
RE: Isolation?, posted on July 31, 2015 at 02:09:09 | |
Posts: 2424
Joined: July 11, 2007 |
There are many DACs that come with "isolation". It's still not sufficient. Because there are more than one issue associated to USB. The isolation is usually run on the I2S. And that's just isolation. The typically used XMOS chip and its surroundings acts as open door to the noise, data-jitter, clock interferences and modulations, EMI/RFI, reflections/impedance issues, crosstalk, you name it. (That's why Steve Nugents famous words " It's all common mode noise" must be considered nonsense.) iFi claims 5db noise reduction with the iPurifier. That's not covering the whole subject. They also sell split cables to cover some crosstalk effects. The USB-Regen covers some data/packet-jitter effects by reclocking the stream with a reasonable quality clock on a hub-chip. They also apply filtering and claim that their ground filtering method is very effective. They address ground loop issues this way. Obviously the bits get properly refreshed with the Regen. Cones become rectangles again. However. People claim that there are still cable issues (impedance?), and that e.g. better clocks and power supply improve the Regen even further. I'd expect that we see a Regen2 sooner or later. However. As an external device, the Regen will never be the perfect solution. I do also think that pretty non-linear buffer-jitter (buffer - read/write/clear) might cause issues. Obviously that's less with asynchronous USB. I doubt that it 100% disappears though. What I'm saying here is that the firmware and drivers shouldn't be neglected. To me all these issues are basic engineering issues. And should be known to a capable DAC designer. Many of these are addressed to a certain extent of course. I doubt though that these issues are sufficiently addressed. That's at least what the e.g. the Regen shows. My advise. Dear Manufacuters (That includes Empirical Audio, Ayre, asf.). Buy yourself a USB-Regen and check your device performance with or without it. After that you'd know what to do. Especially these companies that ask several thousand $ for a device can be expected to implement this or that measure. I mean a Regen in parts might cost $20 max. You might also get in touch with XMOS to discuss the issues. Thx ----------------------------------------------------------------- blog latest >> The Audio Streaming Series - tuning kit pCP |
RE: Optical - Cool! -Fibre, posted on July 31, 2015 at 07:46:18 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
is electrical. The optical bit is embedded. |
RE: Isolation?, posted on July 31, 2015 at 10:14:53 | |
Posts: 2667
Location: NY Joined: July 31, 2000 |
It is such a pleasure to have someone here that knows so much... What we we do without you... |
ANother, posted on August 1, 2015 at 00:00:25 | |
Posts: 13158
Location: Kent Joined: June 1, 2002 |
who know so little about audio, who spends a lot based on fad, and who makes the loudest noises here. |