Rubidium Clock

Can anyone advise whether an Esoteric Rubidium clock would improve the sound on my Esoteric X-01/D2 player? I have been told "not much since it is a one box." But the reviews have seemed to indicate that the upgrade in sound quality is quite apparent. I am aware that some upgrades are very small in their ability to be heard, others are like a whole new piece of gear.
Any advice is appreciated.
ysound - I'll second your recommendation of the RedNet. I also have a D16 and love it.

Zephyr - the Cybershaft is going into an Antelope Liveclock which is then feeding the above mentioned RedNet D16 and a Mutec MC-3+ USB reclocker. I've been very pleased with the outcome.

Interesting discussion. I'm using Oscilloquartz 8607 powered by custom PSU and very happy with results in my Aurender/dcs system. Problem now is availability of 8607 on used market so your option could be very interesting alternative
That looks to be one outstanding OCXO clock module...phase noise and precision specs are really impressive! It reports discontinued unfortunately....this seems to happen alot from what I've seen recently.  I'm told that vendors often will buy up 1500-2000+ units of such a component when they find it and test it/validate its quality just in case. Very similar to what happened alot in the DAC chip market and how some vendors (AMR, others) have chosen to proceed (which is a good approach IMHO).....
Hey Zephyr,

I just had to...... Thanks Zephyr for contributing Cybershaft's excellent OCXO at affordable prices!

Just received from Kenji an option 16, -116db/1 Hz OCXO hand selected/tested from many OCXO's.

The packaging was 1st class all the way, just beautifully well packaged and delivery was just too fast, i hadnt even expected it for another 2-3days. 

I have to run it in, nut off the bat, coming from a Quartzlock rubidium 110db/1 Hz into a G-02, what i am experiencing  exactly echos your comments from switch from rubidium to OCXO.

" I had precision in many ways but not the beauty and naturalness I am experiencing with the lower phase-noise OCXO-based presentation."

The Rubidium has maybe better sparkle or "brightness", not in a really bad way and a bit more pyrotechnics in the bass... I would term it a hardness and some glare which i did not really find distracting with careful tweaks and room adjustments. Rubidium thus lends to a brighter, showy or flashy presentation.

Cybershaft's OCXO is just so much more grounded in the mid regions  and has zero brightness that i can tell so far from any genre's of music now, even "poorer" commercial recordings.

Hi Custodian, i appreciate your comment now of low phase noise from your BVA 8607..."Zero digital glare" from discussion from another forum.

I am not certain is this an combined artifact of low phase noise and also character OCXO as opposed to a rubidium unit.

I guess i have fueled my quest of experiment with clocks. Thanks to all, a most excellent resource in this discussion.