Rubidium Clock

I just heard this combination yesterday. There was a definite improvement in the sense of real insruments and voices in space, and diminished "splash" on transients like cymbals and applause. The character of the sound changes less than what you hear when switching between the DSD and multiple-bit DACs, but whereas I think the DSD/multibit choice is a matter of preference, it's pretty obvious that the clock's impact is better, vs. just different.

I'll take a stab at quantifying the impact, and say that the effect on redbook is about 25% of the way from redbook to SACD, possibly a bit more.

I also listened to the $5k model ( G03X), and this much less expensive model is very nearly as effective. I didn't try to compare clocks to each other because frankly, I can't afford the G0Rb unless I win the lottery. As far as the G03X, if I had the cash, I would taken one home, but alas, it will have to wait . . .

you can buy a SRS PERF10 for around $3000, the rubidium clock "box" inside is better than the Esoteric or the Antelope.

Are you referring to SRS FS725?
http://www.thinksrs.com/products/FS725.htm

The SRS FS725 is the older, simpler version of the Stanford Research Systems rubidium clock.
The PERF10 has a nicer box and a power switch, but the same internal clock as the SRS FS725

If you get the SRS rubidium clock, you still need to get an Antelope Isochrone OCX master clock which outputs 44.1K. The Rubidium clock acts as an external clock to the Antelope
http://www.antelopeaudio.com/en/products/OCX-master-clock

YMMV but together I have found that these 2 clocks can make a big difference at considerably lower cost than the Esoteric rubidium clock which I have not heard. And power cord and digital IC choices can also make a meaningful difference raising the overall cast.

Thanks for the great info. I will need to try one of those.