PC electrical isolation from DAC

[PeterSt]

I've compared a standard blue 10m copper USB3 cable to a standard blue 1m copper USB3 cable

Hey Mani, what's up with this ??
I now start to realize that I checked the maximum length to the NOS1 with USB2 all right (which is ~7 meters) but that it never came to my mind that USB3 could change a few things here. I mean, it would be news to a few people when USB can be extended further than I always told (for the NOS1 that is) ...

And then to think that you most probably have used a "standard" (??) 10 meter cable, while it might even go up to 15, or 20, or ... ?

Any specialties on using the USB power or not ? SOtM anywhere perhaps ?
And when it works anyway, a link to where people can obtain these lengths ? (or did you extend it ?)

All 'n all this comes nicely out of the blue for me, but maybe I've missed a message about it elsewhere. Anyway, great thanks that you dropped it in between the lines anyway !

Regards,
Peter

[manisandher]

And then to think that you most probably have used a "standard" (??) 10 meter cable, while it might even go up to 15, or 20, or ... ?

Ha, I should really check things before writing a post (I blame still being a bit jet-lagged). I thought my USB3 cable was 10m, but it's actually only 5m - I got confused with a (blue) 10m CAT6 cable I ordered at the same time.

To make amends, I've just ordered a couple of simple USB adaptors (http://www.amazon.co.uk/Female-USB-Adaptor---A-USB-4/dp/B0012XXX2Q/ref=sr_1_10?ie=UTF8&qid=1341392219&sr=8-10) and will link the following three standard blue copper USB3 cables that I already have here together: 5m, 3m and 1.8m... and see what happens.

Sorry for any confusion.

Mani.

EDIT: Ordered a couple of these instead http://www.amazon.co.uk/gp/product/B007HXM11E/ref=oh_details_o00_s00_i00

[PeterSt]

Aha. Thanks for coming back on this.
But to be honest, I really have thought about that USB3 can make a difference for the length. It's only that I never tried it, that needing this length of course (it is already not all that easy to obtain a normal A-A cable, unless you already know where to be.

But summarized : I seriously think that what can be achieved will be longer than with USB2. I mean, why not ? The power is not used, the transfer is higher speed so if latency would be a problem than that's less now and for allowing the higher speed the "electrical transfer" has to be of a better quality.

Do we have special UK bookmakers for this ? I say 12.8 meters will work.
But it's dangerous, because the other end (NOS1) is USB2 and I sure can imagine that this is part of the latency, and even quality. So, might you not achieve 8 meters (I can't with USB2) than it doesn't make a difference at all. Can you go to that or beyond, then there's a difference obviously.

Do notice (but not sure what you can do with it) that right after connecting it, the most "surge" will be there. So, this is when the most amperage is used, but that shouldn't do a thing (because it's powered from the inside). But also in that stage the most bulky transfer is implied (it loades the firmware in that stage) and that might be more difficult than normal audio transfer. The least what I would do if normally plugging in the cable doesn't work, is plugging it in when the PC is off and then boot (but I realize that this is also current related and shouldn't do a thing).

I now feel that I delegated some tasks; that's not how I meant it.

Peter

[Scroobius]

Hi Mani – you are more than welcome to come for another visit and yes I would say that the performance is really in another league and that is a result of input mostly from others see my next post.

Cheers Paul

[Scroobius]

Hey Nick –you are very welcome anytime, both Ros and I really enjoyed the day and we look forward to seeing you again soon. I am glad you enjoyed the sounds but I think you have not given yourself enough credit because much of my system is down to you.  Who can forget the “GainClone  Heaven” thread? started by Nick I had never even heard of a GC before then but it led me to build some just for fun really – but then sat open mouthed when I heard them. Then there are the other tweaks like USB3 etc etc all very fundamental. So a big thanks Nick without you this system would not be anything like as good as it is now.
In fact this system really is a product of the XX forum as that is where most of the ideas have come from. Yea Peter is right this sure is a "loners" hobby but the XX forum helps change that really. Nick and I agree it is unique in its rigour and objectivity - thanks Peter I do not see any other hi fi forum in the same class. Peter has not just created NOS1 he has created much, much more than that an environment to push this hobby forward.

All the best

Paul