Thunderbolt DAC input?

[asdf1000]

On 8/13/2018 at 6:20 AM, Miska said:

And much lower CPU overhead for high channel counts at hires sampling rates combined with lot latency.

 

PCIe/Thunderbolt can do nice busmaster DMA "zero-copy" straight from application to audio interface without involving things like USB packet handling.

 

Is the Thunderbolt interface easier to isolate noise from a powerful computer, than USB? 

 

Ground noise, power line noise etc? The common things discussed/tackled with isolating USB inputs of DACs?

 

So even though it has lower latency and better support for high channel counts at high sample rates, does Thunderbolt  still face those same electrical noise isolation challenges as USB?

 

[asdf1000]

6 minutes ago, jabbr said:

Using the Corning optical cable, perhaps

 

I imagine so. My Corning Optical USB works really well. Here's a post by Ted Smith (who also uses it):

 

https://forum.psaudio.com/t/corning-usb-optical-cable/3761/44

 

7 minutes ago, jabbr said:

It may not but USB seems so very sensitive to cables so who knows.

 

Hehe noted, I was asking here if Thunderbolt is as sensitive, in the hope that somebody knows ?

 

@Miska @PeterSt

[asdf1000]

28 minutes ago, jabbr said:

Peter is already preparing the Luscious as well as the Luscious^2 which has a double shield over the fiberoptic cable ...

 

Lol for real?

 

[asdf1000]

2 minutes ago, Ralf11 said:

 

at $275 for the cable, that is less than many, many isolation techniques

 

Well that's what Ted himself says in the post...

 

Many have had reliability issues with it though. Luckily not me though (yet).

[asdf1000]

3 minutes ago, jabbr said:

 

Stranger things have happened than a doubly shielded fiberoptic cable ( SPF 1,000,000? ) but I'll let Peter speak for himself -- don't want to pre-announce anything ?

 

Ha, you're making fun of him for jumping on the JSSG 360 bandwagon with Lush^2.

 

For others, the Corning is not a 100% fiber optic cable though. It has very thin power and ground lines but Ted explains above.

 

[asdf1000]

2 minutes ago, jabbr said:

One thought at the time (I have one also) is that the resistance along the long and thin ground line, reduced ground flow and hence noise.

 

That's what Ted Smith explains in the post I linked above..

 

Sounds fantastic in my system, from a 5Vdc LattePanda running HQP NAA at DSD512.

[asdf1000]

20 minutes ago, look&listen said:

Also increased fragility & failure rate

 

 

Mine has been working for 2 years but I did note earlier, many people have had reliability issues with the Corning optical USB cables.