Just for the record - I didn't say squat about the output Z.   Frankly, I don't understand how you cannot hear differences???  To me, it just calls into question your setup - but, I know people don't like to look in the mirror...it is only human nature.   Not trying to fight here....

I've had a Meridian Explorer here in the Ultra Fi Studio for over a week now, well broken-in, and thought I'd share some of my finding in hopes that they might help some fellow listers.  A few quick minutes here over my last cup o' joe this morning before I get to work on other things.  ...

Mich41, I'll take the last thing you said, then I'm gonna watch some football with my son....   No where ever did I ever say it effected the digital data - you added that, not me.   If you really wanna get a feel for this take and probe around in your dac with your spectrum analyzer...

There's yet to be a DAC that I've tried the filter with that hasn't benefited.  I think maybe it is because DAC guys are just focused on other things and overlooked this one in the process - maybe, I guessing?  I suppose based on my experience thus far, they all broke, as you would say???  ...

There are differences to cable that you cannot see - I've had a hand in the design of some of the Ridge Street Audio stuff....that's what is throwing you.

For me, based on the cost of the parts and the effort involved, $200 for one of these filters is very reasonable.  If one doesn't think the filter is worth that to them, then I'm fine with that.

I have more than enough offers from those who write for magazines...no thanks.   I also offer a 10 day money back minus shipping trial period.   What more does one need?

I'm not going to argue with any of you.  Period.   Here's some light reading:   http://www.murata.com/products/catalog/pdf/c35e.pdf   I refer you in particular to pages 12-13 - that's my starting point.  I improved from there and it took some knowledge, effort, equipment and time...

Generally, I don't post on this site much as it generally and often degenerates into what is typified by this thread.  Basically, someone giving an opinion on something without ever having tried it themselves.   The only thing you naysayers do is chase good folks away from your forum.  ...