What the benifit of using a separate dac?


Hi, I have a Sim Audio Moon Exclipse Cd Player, my question is what's the benifit of using a separate DAC, when do you know that your player is out dated to the point that you need to upgrade or are you better to use a external dac.Using the digital out put of the cd player are you by passing all internal clock and dac's etc, then the player becomes just a transport? Is there is a benifit to be gained by doing this, what sort of dac would you look for, what the differance between the better brands? I currently have Pass labs X1 pre and x350.5 power, mit 3.1 speaker cables, 2.2 interconnects and Talon firebird speaker, Iam only interested in red book, would be great if any body could shed some light on this subject for me.
k_rose
BTW it was because of the press and my limited talks with the Benchmark makers that sent me away from previewing that piece altogether

Blindjim,

Interesting comment based on our discussion about one of the primary drivers for purchase decisions is the desire for differentiated products. The comment says more about you than the sound quality of Benchmark DAC1.

Is it possible that you chose not to preview it because of all the near universal accolades in the press and from professionals combined with relatively modest price means that this is an EBGO product in audiophile terms. EBGO = Everybody's Got One! Therefore the attractiveness of owning such a product is rather limited if you have any inkling to own a differentiated (more expensive) or "better" product.

If you mod your Bel Canto then you can feel even more secure that very few people have what you have!

FWIW: My friend and I bought two identical scooters when I was 15. Same store. Same model - probably produced within minutes of eachother at the factory from the same batch of parts. We had a 30 minute run to school each day and followed eachother. The performance was as near identical as you can get. At one time we got interested in modding to try and eek out more speed from these 50 cc slow-peds. instead of buying two racing type mufflers (with the motorcycle dealer assurance of a significant speed boost) we bought one and tested it. Well is sure sounded different - his scooter had a deep satisfying Harley imitation sound (nothing like that patented Harley sound mind you) while mine remained with its standard millions of scooters on the road sound. Now here is the kicker - my friend took it back a week later and got a refund because it did not make one IOTA of difference to the speed or acceleration.

To end the story, although I have lost track of this old friend, he also became an engineer. It may have been a formative experience. Engineers tend to trust higher authority. Engineers tend to believe text books. Engineers distrust anecdotal evidence without controlled testing and documented measurements to back it up. For Benchmark to plaster their measurements all over a manual with each of their products sold is a very bold thing to do (as any engineer or anyone with manufacturing experience knows). By offering so much detail and information one is exposing oneself to a potential huge embarassement (if anyon eproves you are full of it) and expensive product recall due to lack of performance/conformance should your products not live up to the published specifications (one year to the next). This is very unusual in audio.
HI, I was in the same situation, months back, was using camridge 840CDP, and borrowed a KORA" hermes DAC, and used the cambridge as a transport, and couldnt' believe the diference in sound, was dramatic, sound stage expanded, and holographic imaging was in credible, cambridge is a highly regarded player but adding a tube DAC, made that much of a diference, my system is: belles350ref, von VR4's KOra Hermes DAC,sonic frontier,transport, and purist audio cables:
Somewhere in the archives from years ago you might find some comments I made in listening and comparing an ARC LS2B I had modded by GNSC. My friend had the sme modest preamp in stock form and we swapped out the tube when we compared. Same cables, same system. Bottom line in that case is that we both readily heard improvements in resolution and sounstage. I do not recall specifics. Is that "objective". Someone else listening may have. Heard no difference at all. Which viewpoint would you invest in?

As far as the scooter mod - bolt-on exhausts can easily be as much a detractor from performance as they could an improvement. Adding such a mod with no attention paid to adjusting the fuel delivery (rejetting, re-mapping, etc.) Is far more likely to result in a drop in performance. Some don't work regardless of tuning. I'd really wonder how sensitive one could be to a seat-of-pants judgement on the boost in power on a 50cc scooter of, perhaps 1 hp in some part of the throttle range?! That also could apply to audio mods: our aural memory is actually pretty limited. So how sensitive are you going to be to the changes in a modified player you haven't heard for three weeks or more?
I'd really wonder how sensitive one could be to a seat-of-pants judgement on the boost in power on a 50cc scooter of, perhaps 1 hp in some part of the throttle range?!

Exactly. That is why travelling the same route daily with two identical scooters helped - multiple opportunities to compare under a variety of conditions. FWIW: I had already pulled out the baffle piping in the muffler of my scooter (as all 15 year olds must do) - so perhaps I achieved the same effect as the "racing" muffler. Anyway - it was all good fun - perhaps that is the pleasure in it all - the journey rather than the outcome!

Jaxs2
“Where have yous seen "objective" press reviews on anything? How could there be such a thing, a review being written by a human being is bound to be subjective simply by definition. “

Not necessarily.

IF that truly is your take on info at large, I’ll not try to change your mind here and only offer that you may wish to reflect upon that perspective as it is a pretty dark one to have as a rule. IMHO.

We talk here about all sorts of components, matches and gains. Many are or should be stated in what they truly are… “degrees”… and pertinent to the application we have experienced them in for ourselves. Some don’t construct a rig via specs alone, some do. I have gone that way in the past and did’t care for the end results.

Objectivly speaking of course, subjectivity can not be measured by these same degrees. Noe can get a feel for it’s worth however.

Subjectivity isn’t a bad word. Nor does it undermine completely a persons remarks. It only says “IMHO” it is ‘one truth’ and not necessarily the truth or that it will be YOUR truth.

Therefore I tend to discount Raves a lot. Especially from those who have bought the ‘change’ or item. I feel those accounts although honestly intentiomned are perhaps prone to being tainted if only by their recent investment.. In them I look for comparative notes on likewise items from others of the same ilk or a contrasting one..

If the writer of the article has nothing to gain or lose by delivering an appraisal of a thing, then I have to feel it is more valid or dare I say it, objective, if for only that one aspect.

Idealistically speaking, and I am an idealist… objectivity is a key fundamental in professional journalism. A mainstay and a must or the whole of it should be discarded as it lacks the prerequisite catalyst of integrity ..

But it comes to this. Either we entirely dismiss reviews and/or the reviewer, or we take from them that which we deem true. As there has been much said about published articles and their ties to other than purely objective motivation. I’ve seen no real proof to support such notions, yet they continue to abound in the world of high end audio disscussions.

That dark belief structure will make for a lot less time perusing magazines and online articles regarding any item, let alone audio gear. Let’s simply ignore them all as they are all subjective, huh? Even though we only perceive them to be so.

Well, this might come as a shock but there is truth in reviews. Perhaps not the entire every word sort, but surely I’ve found via my own comparisons to having a reviewed item in house and looking back at the article., much of what was said I found to be valid.

…and just who’s truth are we talking about here… or is it ‘which’ truth?

Any differences I’ve noted were but minor ones, and I chalked that up to the application desparities.

Some of it if not all must however be taken in context. I’ve also found my ear connects more so with certain reviewers than with others. For instance, Much of Art Dudley’s accounts and muy own experiences with those items coincide. Also J Johnson seems more right than wrong to me in his accounts. On the other side I’m no where near John Atkinsons preffs for sound… or some others I don’t recall now.

We trust what we intuitively find agreeable. We discern the truth via experience if we are honest with ourselves about it..

Accounts from other’s of their exp does have some bearing on the things I will pursue. There are other factors, for sure. I’m not usually the trusting type at heart, though I’m getting to become more so that way as of late. Therefore I believe most people are honest. Given that I lend some credence to what they claim up front.

I give still more validity to something which has been supported by others experiences which further validate these initial claims of the mechanic, modifier, solderer, painter etc..

So should we ignore reviews wholely? Take them in part? Or trust them explicitly?

I’m somewhere in the middle ground there and that is why I’d seek colaberative or supportive assertions regarding performance enhancements or even the sort of performance being tendered…. Depending largely on the cost of said change too.

I think it is very uncomplicated …. For $200 sure I’ll take a shot…. For $2,000 I wanna know more.

I do not doubt one wit when the terms improved, increased performance, or just better are used. Not at all.

I just wanna know their percentages of…
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It’s either use other’s info and experiences or adhere to strickly spec sheets, or remain glued to the “best guess” theory. During the seeking out or researching phase of advancing one’s stereo muscle.

Taking into account both the subjective and objective, has aidded me far more than it has denied me.

Or I’m the luckiest SOB on the planet as near 85% of my system was bought in the dark, sans audition.

Jax2
“Your clarification on your hot rod metaphor still doesn't connect with me. You're talking about mods that can be measured on a dyno (which really don't tell the whole story about how they translate real-world anyway”

Oil well.

BTW… I ran drags. Not road courses.

Jax2
“What would an "objective" review of a modification read like?”

That’s an easy one. “BLAH” “BLAH” “BLAH” “BLAH” “BLAH” OR IN OTHER WORDS,
Merely the facts. The differences from the base unit to those of the altered one via measurements.

Measurements however don’t always riddle out a puzzle.

Shadorne….
“Interesting comment based on our discussion about one of the primary drivers for purchase decisions is the desire for differentiated products. The comment says more about you than the sound quality of Benchmark DAC1. “

I never railed on the Benchmark. Infact if you go back and look through my posts you’ll find I added some info supportive of the Bench that was given me directly from the Bench folks about their technology which was unclear in that thread. This was a good while back too. Like 05 or 06.

I never said I bought into the notion of acquiring things merely due to their status or niche appeal. I simply can’t afford it. I am no longer trying to be unique in any respect.

Shadorne….
“If you mod your Bel Canto then you can feel even more secure that very few people have what you have!”

I pray I never get that vain and I can ill afford to allow my ego to make my decisions for me. IF I gave you that perspective somehow I regret it.

Shadorne….
“By offering so much detail and information one is exposing oneself to a potential huge embarassement (if anyon eproves you are full of it) and expensive product recall due to lack of performance/conformance should your products not live up to the published specifications (one year to the next). This is very unusual in audio. “

Well, who’s gonna go back and remeasure the specs anyways? Have you ever done that? Has anyone here ever taken the time and done a check of specs offered from any maker’s products? I seriously doubt it. If they did however, what would that one investigation change? Uh, I guess Stereophile will, gbut mostly when JA does that part much of it is beyond me anyhow. Those numbers too don’t always add up to the experience the product provides.

That last part gets me too…. As changes are implemented into a device by the designer (s) I’m guessing here, measurements are taken during those alterations…. Why should it then be so hard to provide them with each variation? I mean they got ‘em, they likely wrote ‘em down somewhere at some point… so it should be an easy task.

…but then the note “specifications subject to change without notice” will probably forgoe too much litigation.

In fact I’ll trust their numbers until I determine they are otherwise, suspect. I’ve found some that don’t add up in the brief time I’ve been back to this hobby via my own experiences…. Or at least seem not to..

I’m the champagne sort on a beer barrel budget. Add to that my visual prowess have and are waning significantly, the esthetic appeal most often is now a mere aside for me. I derive no such enjoyment from it. ‘Course I ain’t into owning banged up or shabby looking stuff too often either. Yet I’ll take a ding or dent if the job gets done in fine form.

What a thing does is of far more import to me than either it’s exclusivity or appearance. Price alone usually dictates the latter. For a premium dollar figure however, it needs be of supierior looks as well.

My ideas on erecting and affecting a system are fundamental enough I suspect. The result is the combination of the sum of it’s parts. All of it’s parts. Each item affording something more or something less, yet all of the facets being necessary though not as important at times, one to the other.

I tried 3 DACs in all. Apogee, Lavry, and my current BC D3. The Apogee was the briefest encounter, the dA 10 was lengthier and now the D3 being the longest.

My decision to keep the DAC3 came by what it served up to my systems needs and my concerns… and yes… my objectively subjective preffs. The DAC 3 is not the end all be all product. In fact I’m sure of that. For me to be truly satisfied some of the peripherals surrounding a device need to be in place and with the BC DAC3 I feel they weren’t. But I’ve kept it anyhow…. Soley on the basis of what it lends to my rigs and my own needs for audio satisfaction. It has what I deem to be obvious flaws but it’s shorcomings are outweighed by it’s attributes in my system. It was a disgruntled choice on a personal level, but a good one for my rig..

I said as much in my own personal account of it in the review I posted here on the ‘gone.

Jax2
“Somewhere in the archives from years ago you might find some comments I made in listening and comparing an ARC LS2B I had modded by GNSC. My friend had the sme modest preamp in stock form and we swapped out the tube when we compared. Same cables, same system. Bottom line in that case is that we both readily heard improvements in resolution and sounstage. I do not recall specifics. Is that "objective?".

Yep.

Jax2
“Someone else listening may have. Heard no difference at all. Which viewpoint would you invest in?”

2 for; 1 aginst. You win.

Objectivity is a significant principle of journalistic professionalism. Journalistic objectivity can refer to fairness, disinterestedness, factuality, and nonpartisanship, but most often encompasses all of these qualities.

Subjectivity refers to a subject's perspective, particularly feelings, beliefs, and desires. It is often used casually to refer to unjustified personal opinions, in contrast to knowledge and justified belief.

Your statement of two people determining some change has been made is objective as I believe the assertian and your own self to be true and honest..

The degree of that noted change if measureable would also be objective.

It becomes subjective when a said difference is derived from a perspective or singular view point than from actual measured indicators.

The context of the subjective information is then as important as is the application. Both terms can contain integrity, honesty, and truths. The subjective portion only needs contain the truths of the relayer of such perceived truths and has no need for actual measured indexes.

Consequently I would believe you were you to tell me a certain change had occurred given a certain practice had been employed. The extent of that difference would be what I would try best to apply to my own circumstance (s) given we spoke of it at any greater length thereafter. If no such a side bar was continued it would be lessend as to it’s import and likely forgotten as it could not be determined as pertinent to other applications. Yet to be realized.

I feel THE truth as important an ingredient as is YOUR truth or my own.

Neither is more or less valid… for it remains in the context and application what truth is found there…. That’s the REAL truth. As at that time it is applicable purely and solely in that milieu.

Ascertaining the increment of change beforehand is the ambiguity, interest and allure for the audio devotee. I just think that with greater acclaim, publicity, and press of these provided increments it would be an easier task to make a decision whether or not to ante up for them. In our own ways we make calls on the next step (s) we will take to improve or change our compliment of devices & accessories. This is how I do it that’s all.