Koetsu Blue Lace Onyx vs. Coralstone


wondering if anyone has had the opportunity to compare these 2 cartridges?

would also like to know if anyone feels the "diamond cantilever" to be a worthwhile upgrade?!

any insights appreciated...
11flat6
@mulveling 

I use 8x because I constructed my phono stage so that the volume control is identically the gain control on the output stage, so there is no wasted amplification. The gain control usually sits between a gain of 50 and 150 (plus the 8x contribution from the Lundahls).

Since the volume control consists of a rotary switch selecting different nude Vishays (not a ladder), the gain is not compromised in any respect, and the output is black at 8x. Since I suspect that distortion is an increasing function of gain, even in Lundahls, I leave the Lundahls at their floor.

Those Vishays sure do keep the circuit quiet, and complementary aerospace MATxy don't hurt either.
@nicknick 

Thanks for sharing your experiences - I'm happy with my KRSP, but ... good to know the options.

Please keep us informed.
I'm now using a Coincident Audio Statement Phono, loading at 30 ohm. The stock tubes were replaced with Telefunken ribbed-plate 12ax7 which are much quieter & paint a larger sonic picture. I had a ARC Ref Phono 3 previously but felt the sound was too aggressive, the decay was curtailed too, guess the 6h30p supertubes in the ARC are probably too fast for phono amplification purpose.  I never had much luck with SUT, transparency always suffered somewhat in my system. A friend who also has a Blue Lace diamond cantilever uses Kondo silver SUT with a matching phono with excellent results, but they are too pricy for me.
@mulveling 

An update. I tried to run my phono without SUT's, and my gain was just high enough. Just a little hiss, inaudible from 2 feet. More dynamic, sweeter, fuller. Nothing against the LL, just a different sound, which I think that I prefer.

Current loading is 200 to 1000 ohms (polyphony and piano respectively).
My vinyl playback system has recently received a major uplift, from a loaned Thomas Mayer D3a phono amp. While the system has always been satisfactory but it never achieved the true high end standard I strive for, not even matching my digital playback at times. This was quite frustrating in view of the rather costly front end I invested. I had suspected the limitation lies at the phono amp but never found one that blows me away, until a week ago someone loaned me a Thomas Mayer phono. The improvements are simply jaw dropping, I can only now appreciate the strength of the Koetsu + Kuzbass 4 Points + TW Black Night combination.  Anyone with a high end front end should give this phono a try.