Can I use S.S. 10M Rubidium Audio Clock alone in my K-03X?

Sorry, I forgot to say I just use my K-03X for CD/ SACD playback, I don't use it to play music file.

Yes you can use the K-03x, K-01x or any other Esoteric device that accepts a 10Mhz master clock input sync connection with an SRS PERF10 or other 10Mhz master clock. You won't get the 44.1 or multiples of that clock frequency like the G-series clocks give you, but what you do get as I understand it is a rock solid clock sync pulse signal from the atomic master that will improve all aspects of the performance in and of itself. Further, if you ever get a G-03 or G-02 or G-01 Esoteric clock, you can hook the 10Mhz atomic master clock into that and then all the other Esoteric devices get sync'ed off the G-series clock baselined with the atomic clock's 10Mhz pulse. This combo is reported to be the ultimate combination but I've not owned it personally...

Zephyr24069

Actually I owned a G-03X Master Clock with my old X-03SE before, but I was a little bit disappointed the result, because the difference of the sound quality is not significant in most of the CD playback. I just sold this old CDP and master clock recently. Now I got a brand new K-03X CDP, this time I need to be very careful to decide whether I need an external master clock or should I get a good quality 10MT rubidium audio clock only.  Well, to buy a separated external master clock like G-02 + a 10M Rubidium Audio Clock together is a big investment (If so, I better purchase K-01X without using any external clock).

 

I need to make sure:

If I can use S.S. 10MT rubidium audio clock only in my K-03X without a master clock. And if the sound quality is much better than use a G-02.

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I've done a lot more research in this regard and have had a number of conversations with SRS as well as other options. The lead-time on the PERF10 or FS725 is longer than I would like to wait personally and my RFQs out to LibertyTest, AllTest and other certified/used equipment vendors for a PERF10 or FS725 have come up dry at the present time. I stumbled on Cybershaft Japan as an option via listings on various sites. It seems they make OCXO, Rudidium-only and OCXO+Rb clock units (single port each standard) for high-end audio, video and studio purposes at an extremely aggressive price point (the Rb-only unit is about $1300-$1500 USD depending upon JPY->USD conversion rate). They are rated for 100-120V and 50-60Hz use which makes them perfect for US or Japanese usage. The Rb-only unit has a single FIFTY (50)-ohm BNC clock output; they supply all their test and calibration results with each unit plus a 1 year unconditional warranty.  I have taken the plunge and ordered one as of yesterday; this should be a very nice and affordable test.  I plan to use this 10Mhz reference clock sync to drive my Esoteric D-02's clocking baseline while leaving the D-02 to sync itself and the P-02 transport together at 22.5792 Mhz.  This should surpass the already great performance of the D-02 clock circuit by a clear margin.  Unlike the PERF10 or particular FS725, this Cybershaft unit seems to have a better internal PSU but I'm not discounting the potential move to another HDPlex power supply with a retrofit in the future to get an even better bespoke PSU to drive the Rb-clock.  I will report back and let you know my findings between mid-late April after I receive it and break it in.  They state specific compatibility with Esoteric D-02, D-03, D01, G-01, G-02, G-03x, G-02s, K-01, K-01X, K-03 and K-03X.  You may read more here (use Google Chrome and let it translate the page);

www dot cybershaft dot jp