@david_ten +1
@mteetank - not at all. Engineers are not designing the streamer to provide a certain coloration, but are trying to design the colorations out.
Digital data is read as a 1 or a 0. But how is a DAC to understand a 1 or a 0 when the actual signal is a voltage variation? Described simply, the signal can be represented as a sign wave and when the voltage hits a certain level, it is interpreted as a flipping to the other value. The sign wave has a positive and negative slope as the voltage varies. The steepness of that slope are influenced by a number of factors, and even minor differences here can cause timing variations in the signal (jitter or word clock error) even though the data is bit perfect in every way.
It turns out our ears are highly attuned to the distortions caused by jitter - even femto seconds of such are discernible. Lots of jitter hurts my ears - it’s sounds “glassy” or “steely” in the treble region.
Further, noise (not hiss, but typically EMF induced) is transmitted along the digital cable to the DAC. This too may cause distortions.
A better streamer will typically have the proverbial “blacker” background and will offer more spatial cues/information. Poor streamers may introduce enough jitter (even to DACs supposedly immune to jitter) that the sound becomes thinner or “steely” sounding.
Others will greater technical knowledge can correct any deficiencies or inaccuracies in what I’ve stated above, but this does speak to the gist of the problem attempting to be solved by high performing streamers.
As others have noted, a good streamer will elevate and allow the full performance of an otherwise high performance system. A bad streamer will cripple the same to some extent.
Many times I see people post here and conclude their comments with “and it sounds great!”. I’m sure that’s true. But, if they’re using a mediocre streamer in their digital system, I can only say it doesn’t sound as great as it might as it’s only in direct comparison that the differences are readily revealed.
