For Gustard R26...which bang for the buck: DDC or LHY OCK clock?

I bought an equivalent of the Pasternack from Mini-circuits, another specialist manufacturer of RF cables and other stuff for industry and lab use. Selected it based on very good specs for shielding and low levels of internal reflections, the best specs I could find for BNC terminations when measured at 10Mhz.

https://nz.mouser.com/ProductDetail/Mini-Circuits/141-24BM+?qs=xZ%2FP%252Ba9zWqY%252BuUDA9xTQ2Q%3D%3D&countryCode=NZ&currencyCode=NZD

It sounds good vs some other cheaper BNC cables I had but unfortunately not as good as an AliX LMR-400 clone which is in turn some way behind the Harmonic Tech Digital Copper III. It seems there’s more in play here sonically than just the fundamentals of shielding level, accurate impedance, good terminations and low reflections.

For those who use the OCK-2 for their R26 (or any of the other Gustard DACs) is there any preference for the square or the sine output?

@lollipopguild A couple of forum members recommended sine wave earlier in this post, so I went with that.  I haven't tried square wave.

I read some other posts on the internet and a few guys preferred square. Something along the lines of it being more detailed and sine being smooth. I'm getting good detail with sine and I suspect that I wouldn't like square (reading between the lines). Maybe I'll try it some day. 

@kereru @pindac   Stupid question.  If I'm streaming (innuos Zen MK3 by USB to Gustard U18, Gustard U18 by i2S to R26), should I have DSD Direct turned on (on the R26) so that the internal interpolating FIR filter is off?   Would I turn it off if I'm using my Denon DCD-1700NE as a transport via coaxial digital?

It's working fine with DSD Direct turned off.  

If it matters, I'm using the LHY-OCK2 (connected to both U18 and R26).

Well, I answered my own question.  I turned the DSD Direct on and felt that the sound was better.  It sounds really good.  To confirm, I flipped it on and off with my remote.  I have the benefit of being old, so I couldn't remember what setting it was on.  lol.  I chose what I felt sounded better and checked the dac.  DSD was turned on. The display on the Gustard is so tiny, that you can't see it from the listening position.