MIT Oracle MA Digital AES/EBU

07-28-12: Richard_stacy
The latest find for me is the USB cable that connects my exterior drive to my server. If you read the forums or ask and "expert" they will tell you this cable will not impact sound. Most will say the USB cable that connects the server to DAC will but even some guys say that will not. Well...in my system they both do and not in subtle ways. Changing the feed from my HDD to server from generic eSATA cable to an Acoustic Revive USB cable has been a transforming event for my systems performance.

From a technical standpoint, I for one don't find that to be at all surprising, Richard.

Since you are apparently connecting the server to the DAC via USB, presumably the DAC and the external HDD are located not all that far apart, probably in the same room. Therefore RFI emissions from the HDD cable could couple through the air to the DAC and/or its cable, affecting jitter. Digital noise associated with the signals that are present on the HDD cable could also couple into the DAC cable through the common ground connection they have with the computer.

Those kinds of effects could very conceivably, IMO, have sonic consequences that would vary among different cables of the same type (e.g., USB). But changing from eSATA to USB introduces additional variables that are likely even more significant. In doing that, you've made major changes in the technical parameters of the signals being conducted by the cable, including risetimes and falltimes, which directly relate to RFI and noise. You've also changed the interface circuitry that is being used in the HDD and the computer, and you've changed the involvement of the CPU and related circuitry in the computer in processing the transfer of data. All of that likely affects the timing, magnitude, and frequency components of computer-generated noise, some small fraction of which probably ends up being conducted into the DAC, affecting jitter and/or bypassing D/A conversion and directly affecting analog circuitry in the DAC.

Of course, as we've discussed in other threads, IMO these kinds of effects figure to be highly system-dependent, and to not have a great deal of predictability, and to have a degree of correlation between cable performance and cable price that is much less than perfect.

Best regards,
-- Al

Thanks Richard,

Yes, it's a little strange how finicky the Sooloos is. Its performance is impacted not only by digital cable but also by where I place it (it was dynamically flat when placed on the shelf above my amp - much better when moved far away from the amp) and where I plug it in (highs were really rolled off when it was plugged into the same Nordost power bar as the rest of my equipment). Aside from placement and power source there's not much else to tinker with, as it has it's own ac to dac power cord/ transformer. Maybe I can try some sort of simple power conditioner to keep it from feeding noise into the powerline?

Cheers,

Cam

As a follow up, I found a way to turn off the up sampling and apodising filter in the Sooloos and now the sound is very open with extended high frequencies - with the MIT Oracle digital cable in place. Turns out the MIT cable was not the culprit after all.

For money's spent the Wireworld Platinum USB, and Digital cables together are amazingly good ,I have had AQ Diamind also good
More realism and depth with the Wireworld combo and under $1500
For both 1/2 m length. For digital some say you need at least. Meter.
Ii have found with Wireworld as the only comparison I did ,and -0
Drop in sonic integrity. Wireworlds geometric makeup tends to use bigger diameter conductors ,this may have something to do with it.
Personally I think th Kubala cables ar getting over priced IMO
But still a very good product.

@crystalref 

You wrote: 
”01-23-2010 1:05pm
I use the MIT Oracle MA digital cable with BNC terminations as a clock cable between my dCS Paganini transport & DAC with Siltech Classic Anniversary G7 Firewire cable for signal transfer. In my installation, the improvement in sound quality pursuaded me to dispense with the additional Paganini master clock as I did not feel that it brought any more to the party.” 

I got the following setup: 

dCS Puccini latest FW/SW 1.41 
dCS Puccini U-Clock PUC latest SW/ FW
dCS Network Bridge 

and i am using the two MIT Oracle MA-X digital 1m as word.clock cables in my dCS setup. 

I just got a question on what setting you had on the MA-X knob for best SQ? (Martin Raynlods at dCS recomends to set the MIT MA-X to the MAX setting when used as a Word Clock cable)

But it is always ibteresting to hear what you have find to sound best?

Looking forward for your answer! 

/ Fredrik