DAC Measurements vs Actual Experience


I have spent the last two days evaluating which of these two DACs I will be keeping:
1) Benchmark DAC3
2) PS Audio DirectStream

I'm foregoing the use of a dedicated preamp; the chosen DAC will serve that purpose.* 

I had read up on the technical side of each of these exhaustively before purchase. For those of you who aren't familiar, the Benchmark DAC3 measures quite well in every category. The PS Audio DirectStream, on the other hand, not so much. In fact, Audio Science Review places these two near opposite ends of its SINAD (signal-to-noise-and-distortion) list with the PS Audio being positioned near the bottom. Stereophile also provided measurements in their review that painted the PS Audio in an unfavorable light. 

And yet the DirectStream is proving to provide a sound that is more, dare I say, musical. It's a bit more relaxed, sounding a tad reserved in comparison to the DAC3, and the presentation of 100 Hz and lower seems to be slightly vague, but it's also less edgy, possessing a better soundstage, and is overall ever-so-slightly more enjoyable. So what am I doing wrong?

* Is it worth considering putting a dedicated preamp downstream of the DAC3 in hopes of gaining a more favorable sound? 
sixfour3

Showing 3 responses by justmetoo

In my very personal experience (with top ML components, and X350.5 PASS) the answer is a straight YES. 
A good preamp WILL make a difference, and the better measuring DAC might actually come to the fore!
Seriously, 
Michélle 🇿🇦 
If any of either if these DACs uses bit-stripping for volume control, a pre WILL make a difference for sure!

The ML390S processor e.g. uses resitor ladders in the analogue domain for volume control, and STILL, going straight (circumventing the volume control) into the ML326S pre, just sounds more 'normal' (less hyped up digital). 

Unless maybe you are considering using a top dCS type DAC straight into your amp, a good pre, and even a solid state one, will make for a more natural sound quality. 

Test it out for yourself and you'll hear.
I 'm not the only one that made that experience either.

That thread by Whitecamaros and his ongoing amp testing endeavours, came to a similar conclusion quite more recently, if you care to read through the tail end of his very long thread, - and incidentally so did John Atkinson of Stereophile some time back as well

So, listen and find out for yourself - since there is disagreement already on this issue. 
Michélle 🇿🇦 

Yes, of course, perception and measurement can, and in many situation, actually WILL,
 disagree. WHY?

In my experience it is something to take as a ’given’, something to accept - not easy actually.
Something even more hard to learn is, the level of ’SQ limitation’ of one’s front-end feeding one’s speakers - THIS includes your cable/system synergies, big time!

Something I had to learn quite recently after over 25 years of looking - in the wrong places too.

In my case, I had taken for granted that my Transparent Ultra, pre to amp, was ’beyond reproach’.
Turns out that was not quite so!

A more like accidental change, of this item (Transparent), for a Madrigal HPC XLR (25 years old!) affected my digital (and analogue) performance most profoundly!

Former harsh like digital sounds, trying to mellow down (make mor 'musical') by e.g. CDP interconnects, using another DAC, with very pricy Transparent Reference digital interconnect, and on - all was of rather marginal outcome.

The ’right’ pre to amp interconnect, all of the sudden, ’changed’ digital harshness into... previously unheard DETAIL, AIR, TONALITY, CLARITY etc.! 

So, the looking for more ’warmth’ in digital reproduction, in this case turned out to be just a band-aid for low cable/system synergy.
This is just an example for what can happen if one ’looks’ in the wrong place - based on some long held assumptions.

I hope this makes some sense, as its not a very easy thing to get accross.
Michélle 🇿🇦