Any interested in an external clock source project?

The "Svartbox" can clock your interface through SPDIF, and therefor clock other DA converters from your interface, but there isn't much you can do for the AD converters.

However, the "Svartbox" has it's own clock, and since your AD/DA converters can clock themselves, there is no reason you can't use the SB to mixdown and monitor with.

Wow Chuck that's adorable. I meant a two channel box. Thats all. I dont need eight channel but would love a two channel hi end box.
You are right i don't know a ton about clocks but it was unnecessary to go the distance you did. At sny rate Im sorry it hurts that much. God knows if i woke up in your skin i would...
I'll definitely keep off your guys discussion.

OK, i think the question that came up can still be answered, it might clear up for some, if svart's converter already does what people might want to have.

The clock of the "svartbox" is in the spdif signal. (Which is not a bad way to distribute clock at all, btw...)
The AD in this box sees *only* the internal hq clock, which makes absolutely sense and is most probably the easiest setup possible.
This SPDIF signal has to be clock master, because the AD can not "see" anything from other devices.
The interface you are using, most likely your soundcard device that is seen by your computer, gets the signal, and since it can not send anything to the AD, it has to be configured as clock slave and sync to it.
From there, everything else has to be configured as clock slave.
And also the DA in the svartbox is intended to get it's clock over the SPDIF signal that is coming in.
AD and DA in the "svartbox" essentially are independent devices that share the case and power supply.
They operate each on it's own, with the DA always clocked to the incoming SPDIF, not directly by the clock of the AD. Although, in most setups, the clock, that clocks the AD, goes down SPDIF, clocks the interface/soundcard, goes thru the SPDIF out back to the "svartbox" and clocks the DA.
AD is clock master, everything else from there has to be slaved to it. No matter if SPDIF/AES, ADAT or whatever.
External clock may be of interest if you already have ADs you want to use in sync (more than one), mostly if you have need for lots of channels.
And probably, sometimes, mediocre AD devices with fairly mediocre clock MAY profit from an external clocking that is of better quality. And i would not count on that. Has to be found out practically in real life if it does better or worse.

I didn't take it the wrong way.  I count myself as one of those potential (though maybe I shouldn't be) but confused buyers of a product like this. It could very well be something that would make me very happy and feel like I made a wise investment, but honestly I still don't understand at what point (i.e, in concert with what other equipment) a higher quality clock makes a reasonable difference - if at all. NFC makes a valid point.

Just try it yourself...that's all the explanation you need.