Ideon

Instead of paying $3900 for an "audiophile approved" clock, go with a better and less expensive pro audio solution. For example:

Mutec MC3+ Smart Clock USB

Don't you also need the Ref10 master clock to operate that ?

No. You can add the REF10 or REF10 SE120 for better performance but I haven't tried either.

I was using ideon 3R mastertime when I had antipodes CX/S30 as streamer. This was amazing add to my system. They created better imaging and focus. Also added more body and increased soundstage. Very hard to explain the benefits but I definitely missed it big time when I tried to take it out of system. 

Now I changed my streamer to aurender n20 and they have best spdif output. I am sticking to spdif output and will plan to stay with spdif. If I ever go back to USB ouput, I cannot stay without ideon 3R. In general ideon products are amazing and are very underrated.