NOS DAC's without any digital filtering?

Hi, I was looking for a technical explanation rather subjective opinions. Bombaywalla was the only one to do this. Guess I wasn't clear enough. Thank you, Bombaywalla.

Bombaywalla, I think the confusion was....

when I mentioned "aliasing", I actually meant the "pre-ringing" associated with steeper filter slopes from lower sampling rates (ie. 44.1khz). I thought this was same thing. I have heard hi-res tracks from several different companies and the vast majority sound subjectivly better to me, and I assume that this perceived difference has to do with "pre-ringing".

What I'm getting at is...

does a redbook only NOS dac use a different method to reduce this ringing, or does it just compensate by providing [i]overall[/i] better sound somehow?

Of course it's the overall sound that actually matters, I just want a better understanding of WHY.

Thanks!

Simple question: all R2R NOS DAC's are redbook only, correct?

Okay, that makes complete sense now. Thanks!

So even with a NOS DAC I assume there is still benefit of using hi-res files? Why would somebody want to up-sample redbook in their software (foobar, JRMC, Amarra, etc.)? I haven't tried this in a few years but I recall that I preferred the sound w/o the upsampling (in JRMC).

Hmmm.

Sorry, my last post was directed at Bombaywalla.

Actually, some modern DAC's suck and some don't. As engineers say it's all about implementation.

Bombaywalla, your explanations have been super helpful for me. You literally have to spend hours on the internet digging for this kind of quality info.

One last question based on your last response:

Is an upsampled 16/44.1 file just as good as as "hi-res" file of the same sample rate when using a NOS DAC? No advantage at using a "hi-res" track at all???