Implications of Esoteric G-0Rb atomic clock


The latest TAS (March 2008) has an excellent piece by Robert Harley: a review of the Esoteric G-0Rb Master Clock Generator, with sidebars on the history and significance of jitter. This Esoteric unit employs an atomic clock (using rubidium) to take timing precision to a new level, at least for consumer gear. It's a good read, I recommend it.

If I am reading all of this correctly, I reach the following conclusions:

(1) Jitter is more important sonically than we might have thought

(2) Better jitter reduction at the A-D side of things will yield significant benefits, which means we can look forward to another of round remasters (of analog tapes) once atomic clock solutions make it into mastering labs

(3) All of the Superclocks, claims of vanishingly low jitter, reclocking DACs -- all of this stuff that's out there now, while probably heading in the right direction, still falls fall short of what's possible and needed if we are to get the best out of digital and fully realize its promise.

(4) We can expect to see atomic clocks in our future DACs and CDPs. Really?

Am I drawing the right conclusions?
Ag insider logo xs@2xdrubin
The big breakthrough in upcoming Dacs has much more to it than just if they are USB connected. It's more to how the data is streamed from a hard drive to the USB dac. There are HUGE sonic gains to this methodology ONLY if it is properly executed. At this moment, there are only a few select digital designers that even know how to do this correctly. Most that have a USB connection are not taking advantage of the elegance of streaming the data via a USB to avoid the jitter and many other problematic issues that are inherent in our current way of digital playback. Once we get a digital couple of companies that surface into the mainstream (that actually know how to do this correctly via USB), I think many audiophiles will be STUNNED to hear the analog fluidity that cannot be achieved with any other form of connectivity. Other digital companies will have to notice of this leapfrog improvement in sonics. Subsequently, they will (most likely) just follow suit and copy, i.e someone else does it right first, then the "other" digital companies will copy the "correct" way to do it. I figure we are looking at sometime later this year for the first breakthrough USB dacs to surface. I know, I know... we've all heard these sort of "statements" many times before. This time though, I think we will finally have digital offerings that can actually have most (if not all) of the inherent musicality that was only inherent via an analog front end. It's about time!
C'mon Ehider, tell us who is doing it right today. Whose gear did you hear that convinced you of this rosy future?
Most of this conversation is over my head, but Ehider are you talking about the Asynchronous Mode USB Audio in Gordon Rankin's new DAC's?
I wish I could talk more about what I recently heard (I've been sworn to secrecy). As to my earlier posts, I was not talking about a USB DAC that is currently available to the audiophile public at this very moment. Based on my discussion with the designers, it should be released within the next six months or so. In terms of the question regarding Gordan Rankin's product, this may be part of the "new wave" of revolutionary USB connected products that sonically prevail over typical transports/DACs. Unfortunately, I have yet to hear Gordan's product myself to determine if it also reaches above the levels which we are accustomed from typical "statement" digital offerings. As far as the "Beta" pre-production USB DAC that I heard though (from a company other than Gordan Rankin's) it was a serious jaw dropping experience!
So, now we are finally approaching the pure "bits-are-bits" theory with the USB based digital music reproduction (as was intended from the beginning) and we're leaving the vagueness of the bits-are-bits + something magical concept. This could be a manifesto. To all audiophiles worldwide: Get rid of those mediocre CD transports!

Chris