Advices on 10 mhz Clocks

I have the LHY OCK 2 and I think it is great.  It has improved everything I have hooked it up to.  Cables do matter.  The LMR 240 is fine for 50 Ohm.  The Harmonic-Technology DC III, 50 ohm is better but much more expensive.  I didn't compare 75 ohm cables that closely.  Oddly, and I think inexplicably, burn-in on the cables is a thing.  Just leave them connected and the clock and its gear running for a few days before you judge them.

We talked about my experience with the LHY ock-2 on another post. As mentioned, I noticed a slight improvement when using the ock-2 with my U18 ddc. I don't notice much difference using it with my Gustard X30 dac. 

The game changing moment came when you asked about using square wave outputs on the ock-2. I had not tried that, so I gave it a shot. This made a very noticeable improvement in clarity, separation of instruments, etc.  It's still connected that way.... 

Obviously everybody's ears and systems are different. Square wave is overly bright for me, sine wave is how I roll. All 50 ohms btw. The choice of square wave vs sine wave makes it a winner on the C18. Two connections each.

@baylinor I had read that the square wave output made some gear sound too bright.  In my system, everything sounds more real.  Piano, drums, bass guitar, etc.  No brightness, sibilance, etc. 

@sls883 

It probably has to do that I was purely a vinyl guy for over 50 years before beginning to appreciate the virtues of digital.