USB Cable with No Power

If the receiving device does not use the power then it will not be sucking power via the cable.
Just like your household outlets are wired to provide power.. if they are not in use then they just do not have power flowing through them.
So no need for a special cable.

hmmm...okay, that makes sense. Thanks.

Gosh, talk about over thinking things.
[shaking my head at myself]

To follow Elisabeth.

You have a few options if you MUST go this way.

First you must understand that desire not to use PC power is the desire not to carry ground noise to your DAC, so:

1 Use dedicated server where this problem (and, hopefully, many others) is solved

2 Use USB Cable with interface like iFi where you can use iFi power (it will work even better if no power will come from PC to your USB port). Its also not cheap as you need to buy iFi as well as two quality USB Cable (to and from iFI). iFi supplies terrible quality USB cable which, IMO, negate advantages of iFi

3 Use USB Cable where noise is "grounded" .

From my past experimentations with our Musica Pristina servers the last solution is the best.

All The Best

Simon
Musica Pristina

Simon,

Who makes such a cable?

"Who makes such a cable? "

- Entreq. They developed USB cable(s) for $100k dCS and we work with them.

Simon
Musica Pristina