DAC Dilemma


I will (probably foolishly) put my decision before you all and see if I get any informed opinions, or if I just get scoffed at. I have been at this hobby many years, but must admit to not having the sophistication that many of you do. To those of you that are DAC experts. I have read, and it is my understanding that DAC technology has progressed to the point that 1) new "entry level" DAC’s blow away earlier generation DACs that originally cost much more, and 2) the difference between most current DACs as far as sound quality is pretty subtle. I have an Aurender N100H (which is going to stay) with a PS Audio DirectStream DAC (Not the $6K version. The $3K version with no bridge) feeding into an Audio Research SP16 tubed preamp into a high end solid state amp. Should I 1) just keep what I have (yes, it sounds good, but it could always be better) 2) replace the PS Audio with an Audio Research DAC7 that is about 11 years old but very well reviewed in it’s day, or 3) sell the PS Audio and the Audio Research SP16 and replace both with a Benchmark DAC3 HGC. The Benchmark would give me a current Class A DAC along with multiple inputs for digital, and two inputs for both of my turntables, thus eliminating the need for a separate preamp. But, would the Benchmark SOUND better than either the PS Audio DAC or the DAC7? I am very much aware that the DAC's mentioned above address the actual digital to analogue conversion in very different ways which is precisely why I'm asking which one you think gives the best (natural, uncolored, transparent) sound. Opinions please.
128x128pascon
@petaluman, 
+1.

1 I/V conversion method
2 Power supply quality and robustness 
3 Audio signal path layout
4 Analogue output stage design and implementation 

I truly believe that these analogue factors could very well be the more critical determinate of the overall sound quality of a DAC.
Charles 
By the same token, could analog issues be discussed on the Digital Forum? Most LPs produced since the late 80s have undergone digital processing somewhere along the line.
Greetings. I started a thread here not long ago in which I asked for advice about changing DACs. As it turned out, in a testament to the depths of my own doofusness,  I screwed up and posted a digital question on an analogue thread, much to my unending shame and consternation. Well, since I’ve already been so exposed, I am back to share another head scratching, defies all logic update. I’m not going to try to explain HOW (much less why)  it is I started out asking a question about one set of possible changes, taking in the various responses, and then doing something completely different, I’m just going to tell you what I did and what happened. I ended up replacing a PS Audio Directstream DAC which is as big and heavy as many power amps with a slightly used (still had the plastic on the screen) little black box thingy called the Topping D90SE. In my years in this hobby I have read about MANY more “draw dropping” experiences than I have actually experienced, but this was definitely one of those experiences. Yeah, I’m talking a literal “whoa, Dude, do you hear that?” jaw dropping, let’s-listen-to-another-song-and-another-song and another-source-and-another source kind of experience. One forum reader rather calmly and matter of factly told me that it would be hard to imagine a DAC that both measures and sounds as bad as the PS Audio, and now I know exactly what he was talking about. No wonder I’ve been so frustrated with digital audio. To say that the difference is not subtle is a gross understatement. This is kind of a cheap shot, but I’m kind of worried about Paul McGowans’ hearing. And, to be sure, this little Topping is far from the best DAC that can be had these days. What it does for me though is it puts my ripped CD collection on a level of listenability that approaches decent fidelity for general listening in between the evenings that I sit down with a stack of vinyl for some serious listening. I even find myself grabbing the remote and turning up my background listening because it sounds good enough to no longer just be background. And that’s pretty cool. What is better about the Topping? In a word, everything. Imaging, sound staging, richness, fullness, harmonics, details, everything. Like listening to music instead of listening to the radio. So, there you have it. Thanks again for those who gave opinions. In some roundabout way it led me to where I am.
op

glad to hear you found a dac you like, and a pretty inexpensive one at that

i must say i think there was/is a malfunction of some sort with your psa directstream

anyways, no matter, you are on to something you like better, that is all that matters
You know, that may be. I tried installing their most recent firmware upgrade and it wouldn’t install. I never thought about having them check it out for me to see if it was not functioning properly. It’s weird. I thought it was an improvement over the built in DAC on my CD player, back when I first got it, but it sure isn’t up to the Topping. Of course, Arrrgghh! , now I’m wondering what a newer $2k DAC would be like. It never ends. Gonna try to stick with this awhile.