Fire and brimstone
JackD201 is writing about DACs. This is an excerpt:
"Unfortunately, very high-order filters tend to have high phase shift, ringing, amplitude ripples, and other artifacts at frequencies well below their cut-off, i.e. well into the audio band. This is the oft-discussed filtering problem non-oversampled (NOS) DACs face."
I say the non-oversampler will win the day, ONCE YOU GET EVERYTHING ELSE RIGHT. Firstly, I know of no NOS DAC maker who utilizes filters, for the very reason JackD201 describes.
Even though most systems will not live up to the NOS promise, I promise it is artifact free. Jack espouses, the accumulated artifacts in the following chain may make the DAC distortion inaudible (muddy the picture). Actually, it has been my experience what comes before the NOS DAC that can ruin the pure sound, as well as what comes after.
The transport is of utmost important. I have found only one transport that gets it right, and that transport is as simple as it can be made. That transport is the diminutive 47 Lab Flatfish. All other transports fail for many reasons. One is circuit length. While all other transport makers don't buy into simple means better, the Flatfish proves its importance. Up-sampling transports, and those with built in filters, cloud the signal.
What comes after is also critical. Interconnects are important. They must keep the signal happy and wholesome. There may be a number of them that do it well. The preamp is extremely important. The one I have, a solid state, has a wickedly simple circuit. It is the only preamp I have ever heard that gets out of the way better. Amps are very important. I have yet to hear a solid state amp that even approximates the clarity I am listening to. Speaker cables can only be of one configuration, and I have that. Finally, if you want to hear it all, the speaker has to be able to give you all. I haven't heard any that does that better than the one I use.
I know I am repeating myself. It just tics me off when an audio engineer sets up class so he can tell you all about what makes great sound based on his math, and scopes. The music wave variations are wildly complex. That is why they use simple tones. The graphs show the distortion. But, where hast this distortion arrived?
There is a better way to find out whether filters, and up/over-sampling really work, and that is in practice. I have been working in my sound laboratory for 8 years. They don't work. They worsen the music. I know I am right, because I have attained victory for non oversampling DACs. In hearing do we trust.