Weakest digital link: DAC - Streamer - Server?

Jitter being below audible thresholds?  I guess timing then just doesn’t matter. 

Today, for most digital USB in audio, i.e. USB and Ethernet, no, timing does not matter, not even a little. For SPDIF, most modern DAC chips and SPDIF receivers will remove every last bit of normal jitter. The rare time, very rare, make your SPDIF cable longer. Jitter stopped being an issue a long time ago in most setups.  I am sure there are some low volume DAC's that don't have the necessary circuitry to eliminate jitter.

Insulting someone's hearing is not going to make your point when you are unable to prove that your's is any better.

I worry about the speakers and the room, not the digital components.

Those are the two that will affect what your hear more than digital cables and such. As long as we are talking about competent design I think what a lot don’t seem to grasp is DAC’s, cables and to a great extent amplifiers are commoditites and they do very little if nothing to affect what you hear in your room. Get the features you like at the price you're comfortable with. 

A lot of people use amplifiers, tube, many low feedback designs, etc. to alter the tone of their system. Those will definitely sound different from amplifiers designed to be a straight wire with gain. Some speaker cables may be tone controls. I guess an interconnect could be too. Some MIT seemed to be.

lot of people use amplifiers, tube, many low feedback designs, etc. to alter the tone of their system. Those will definitely sound different from amplifiers designed to be a straight wire with gain. 

Too bad no amplifier is a straight wire with gain.

In our experience, there are subtle differences between streaming from services like Tidal, streaming from a NAS or kernel streaming directly from RAM using an application like JRiver along with an ASIO driver, which is this case is optimized for the XMOS Xcore 200 that resides in the miniDSP SHD.