New Naim DAC at my house today - initial thoughts and experiments.

Posted by: GrahamFinch on 11 December 2009

I have been lucky enough to acquire a new Naim DAC from my dealer today. To put things into perspective for you I want to use it instead of a Dacmagic used with a SOnos wireless system to stream music from my PC to my main system (cds3\555ps\552\250-2, Allaes, powerlines and hilines etc. The digital cable is an Atlas coax cable.

Initially I played a few tracks on the existing Sonos\Dacmagic and then connected the Naim Dac. At this point I used the same Chord Cobra 3 phono to din lead that I used with the Dacmagic. Bearing in mind the Naim DAC was just out of the box it sounded pretty good but with a degree of harshness and sibilence I did not like.

As Naim recommend DIN connections I swapped the Cobra 3 for the standard Naim grey interconnect. This improved the sibilence but maybe at the expense of something else. Overall thought I thought it sounded more natural and less strident. Possibly the edginess would have eased anyway as the unit burns in but I would suggest it is something to consider.

After a while I used one of my Hilines to replace the standard interconnect and this borught about a fantastic imporvement, in the way it usually does. CLeaner, more dynamic, quieter background, better separation etc. A while later I substituted the standard mains lead with a Powerline and another huge improvement followed. This brought the overallpresentation towards the sound I get from the CDS3\555ps

I will try over the weekend to see which cable gives most benefit i.e if forced to choose only one cable whether it should be the Powerline or the Hiline.


I listened happily for ages and then the final experiment was to add the 555ps. It is worth pointing out that wHen adding an external ps the DAC itself must still be powered from its own power socket. It is not necessary to use a Powerline on the DAC at this point as it will only power the software side of the unit whilst the external ps will power the D\A conversion side of things. So at this point the Powerline was connceted to the 555ps. This took the setup to another dimension but whether the setup rivalled or beat my CDS3\555ps is hard to say at this stage. I only have one 555ps so would have needed to swap everything about. I sense the DAC\555ps was probably slightly more laid back than the CDS3 but I will hopefully try that experiment later this weekend.

My conclusions so far are that the new DAC is very good but can sound significantly better with the Hiline and Powerline added. I would suggest if you have a higher end system you really ought to consider these as a priority as this setup represents great value in my view, especially considering the significant extra cost of an external ps.

I would like to have tried a Naim DC1 digital cable instead of my Atlas as I have read that these are very good, albeit £225 each. Presumably the DAC was designed around this cable. Unfortunately my dealer did not have one to try.

The Sonos system works a treat with the DAC and is a very convenient way of listening to music.I haven't yet tried playing from a USB stick or any other digital source.

My overall conclusion based on a few hours listening is that I will not be retuning the DAC to the dealer and will be enquiring about the possibility of getting a deal on another Powerline and a Hiline.

For those of you waiting I think it will be worth it.
Posted on: 12 December 2009 by GrahamFinch
quote:
Deaf perhaps but not stupid enough to believe that one metre of power cable can make the slightest difference to the sound quality.


No need to be rude. If you can't hear any differences with a Powerline (assuming you have actually tried it) then that's fine by me but that does not make either you or me stupid.
Posted on: 12 December 2009 by tonym
Not listened to a Powerline then.
Posted on: 12 December 2009 by GrahamFinch
[quote]I think you should try a good quality optical connection to the DAC. The Sonos coax output is known to be pretty poor compared to the optical, on the older model at least. Also, there are quite a few upgrades available for the internals of the Sonos that you may wish to consider if you are keeping this as your streaming device.[quote]

Julian - I only bought the Sonos a few months ago and according to the website it's all up to date so please elaborate if you can on what upgrades are available. I am happy to consider anything. I could try an optical lead but am not sure if I have one long enough at the moment.

Cheers.

In respect of some other comments being made. I did not say the DAC sounded bad and had to have a Powerline and a Hiline to sound decent - only that these improved the perfomance considerably and were in my opinion a well worthwhile step. If you have a high end system 552 or 252 etc then I would regard them as being essential because of the sound you expect at that level but lower down the chain the case may be different.

I added a Powerline to my 555ps and a hiline to the CDS3 - does that mean it was a poor combination to start with?? Not in my view but the cables were a worthwhile upgrade none the less.

I am sure both would improve the sound but whether they would be worth it in the context of a lesser system is for the owner to decide. And please don't think I am making derogatory judgements about lesser systems. It's taken me over twenty five years of Naim ownwership to get to my current system and I still hanker for a NAP 500. So I am not making snobbish judgements just because I am lucky to have what I have.

In any event the real question (and I can't answer it) is whether the basic Naim DAC will sound better than the other alternatives. I am only commenting on my epxeriences SO FAR after a short period of use and without access to other dacs apart from the Dacmagic of course. As I said earlier that's for magazine reviewers to do or maybe a collection of mates with different dacs.
Posted on: 12 December 2009 by DHT
quote:
Posted Sat 12 December 2009 12:57 Hide Post
quote:
Deaf perhaps but not stupid enough to believe that one metre of power cable can make the slightest difference to the sound quality.
Graham Hi ,I wasn't implying that you were stupid, just responding to Munch who said I must be deaf because I couldn't hear a difference when I tried the powerline, aplogies.
I realy think that it is in those first few minutes with a new component that you really hear the differences, after a while you become accustomed to it, then you have to reintroduce the old component again!


No need
Posted on: 12 December 2009 by js
quote:
Originally posted by AMA:
We have to keep in mind that CDS3 transport is extremely low jitter so that CDS3's built-in DAC does NOT need re-clocking.
.
There, fixed it for you. Ladder DACs are less affected by jitter.

Reclocking does remove all jitter but the reclocking itself can be an issue with accuracy. It's no longer jitter that you hear but something may be off. It's why you need to be careful on how you do it.

When people don't hear a difference I do, they're neither deaf or stupid. If presented under the right circumstances/setup virtually all would probably hear it. It's the presentation part that comes into question.

Graham, my take was also that the stock cable corrected the issue you were having with the Cobra 3. I can understand choosing the Cobra 3 for the Cambridge as it needs a bit more sparkle. Keep the sonos playing through it while warming up even if your not listening. It will speed up the break in. Always found DIG kit to gel quite a bit. We found the Sonos better than the SB as player but you could definitely do better. If you compare the dig out of a sonos into a Uniti vs the internal streamer for instance it's no contest. SONOS was leaner, edgier. The tos suggestion may not be a bad one to try though we have preferred the coax in the past with other DACs.
Posted on: 12 December 2009 by tonytronic
DHT said
quote:
Deaf perhaps but not stupid enough to believe that one metre of power cable can make the slightest difference to the sound quality.


A simplistic view. But in this case it leads to the wrong conclusion.
Naim (and others) successfully sell specialised mains leads to many people (who are not stupid) for a reason - because they make a real, noticeable difference in their systems.

If one regards a mains lead as simply a means to provide 50/60Hz power in sufficient quantity to 'do the job', then one is bound to struggle with any suggestion that exchanging it for another will make a difference.

Fortunately for specialist mains lead makers (and most unfortunately for the rest of us), the real world is not as simple, convenient or friendly as that.
"Mains power" is NOT just 50/60Hz pure sine wave power. It also contains, amongst other things the following free 'extras';-

a) harmonics (multiples of the power frequency eg. 100/120Hz, 150/180Hz, in various amounts right up and through to Khz multiples).
b) Spurious directly injected noise at various frequencies from connected equipment, both nearby and at a distance
c) RF interference

Most people are willing to accept that the above 'extras' in a 'typical' Mains supply are not welcome inside a piece of HiFi equipment. They all tend to degrade the performance. The amount and type of degradation is dependent upon many factors and I won't bore you with them, but higher performance equipment ('Naim' is one) tends to be more sensitive to, let's call it 'mains-borne degradation'.

And as if the above is not enough to think about, there are many other equally significant factors at work relating to mains supply and wiring impedance, and earthing issues. Again I won't bore you with details. Just to say these must not be ignored, as these other factors tend to be in a precarious balance with the 'noise' problems listed above. As an example, you can insert an RF Filter in the mains lead to a Naim amplifier which reduces RF interference, BUT on balance it degrades the sound quality because it degrades these impedance-related parameters.

Now consider the mains lead as the conduit for ALL the above, not just the simple 50Hz/60Hz power signal.
And also consider that the design and construction of a mains lead can be varied, at a cost, to affect the 'mix' of above factors that make it through to the equipment.
Hopefully you can now appreciate how changing this mains lead can, potentially, affect the performance of sensitive HiFi equipment, beit in a good OR bad way.


Tonytronic Winker
Posted on: 12 December 2009 by likesmusic
tonytronic: I'll happily accept everything you say about mains having harmonics, spuriae and RF on it. Agreed. But don't you think it is the job of the power supply inside the product to deal with these issues, rather than an external mains lead? If a mains lead so noticeably improves the sound of a product, doesn't that imply the power supply inside the product isn't very good in the first place?

And how, exactly, in any case, does a main lead filter out 100Hz? Can you measure this?
Posted on: 12 December 2009 by js
quote:
Originally posted by tonytronic:
DHT said
quote:
Deaf perhaps but not stupid enough to believe that one metre of power cable can make the slightest difference to the sound quality.


A simplistic view. But in this case it leads to the wrong conclusion.
Naim (and others) successfully sell specialised mains leads to many people (who are not stupid) for a reason - because they make a real, noticeable difference in their systems.

If one regards a mains lead as simply a means to provide 50/60Hz power in sufficient quantity to 'do the job', then one is bound to struggle with any suggestion that exchanging it for another will make a difference.

Fortunately for specialist mains lead makers (and most unfortunately for the rest of us), the real world is not as simple, convenient or friendly as that.
"Mains power" is NOT just 50/60Hz pure sine wave power. It also contains, amongst other things the following free 'extras';-

a) harmonics (multiples of the power frequency eg. 100/120Hz, 150/180Hz, in various amounts right up and through to Khz multiples).
b) Spurious directly injected noise at various frequencies from connected equipment, both nearby and at a distance
c) RF interference

Most people are willing to accept that the above 'extras' in a 'typical' Mains supply are not welcome inside a piece of HiFi equipment. They all tend to degrade the performance. The amount and type of degradation is dependent upon many factors and I won't bore you with them, but higher performance equipment ('Naim' is one) tends to be more sensitive to, let's call it 'mains-borne degradation'.

And as if the above is not enough to think about, there are many other equally significant factors at work relating to mains supply and wiring impedance, and earthing issues. Again I won't bore you with details. Just to say these must not be ignored, as these other factors tend to be in a precarious balance with the 'noise' problems listed above. As an example, you can insert an RF Filter in the mains lead to a Naim amplifier which reduces RF interference, BUT on balance it degrades the sound quality because it degrades these impedance-related parameters.

Now consider the mains lead as the conduit for ALL the above, not just the simple 50Hz/60Hz power signal.
And also consider that the design and construction of a mains lead can be varied, at a cost, to affect the 'mix' of above factors that make it through to the equipment.
Hopefully you can now appreciate how changing this mains lead can, potentially, affect the performance of sensitive HiFi equipment, beit in a good OR bad way.


Tonytronic Winker
I've given up in trying to figure out why on some things, it just makes you crazy. Many things that shouldn't be very noticable are. I'm buying for my ears and not a scope so I let them decide. We've heard differences in power cables since forever, on everything and used to just select from stock units because the after market ones were almost always worse and sonded like they were doing something. A few exceptions were generally better but more different than those selected out. PL, we all now own. Naim has always recommended to not use power conditioning and many of us have heard the detrimental effects. Nothing new here.
Posted on: 12 December 2009 by Derry
Two things learned:

1. the dac needs a 555ps and 2(?) powerlines to work at its best;

2. the forum is becoming a very intolerant place. Someone says he does not agree that naim mains cable make any difference and is called "deff" which most people would consider rude, but is not commented upon. The recipient then responds in kind and is castigated for not toeing the party line.
Posted on: 12 December 2009 by js
Of course it is rude to call somebody deaf. Perhaps it wasn't called out due to the recipient not exactly typing with kit gloves either. Still inappropriate.

The person that bought the DAC said he's leaving the 555ps on his CDP and enjoying the DAC just fine as is. There should be no doubt that best will be when used with the top available associated kit but perhaps it doesn't need to be at it's absolute best to satisfy more than the next comparably priced piece. That will be up to those that audition. I guess he's keeping it due his profound disappointment. Big Grin
Posted on: 12 December 2009 by tonytronic
The "mains connection conduit" is not a panacea for all problems.
But it can help, depending upon it's implementation.
If it is implemented as a cable, then it's highly unikely to redress second harmonic (100/120Hz) mains distortion.
But as the frequency of 'unwanted' content increases, a cable can begin to have measurable effects, particularly at RF frequencies.

You're right that it suggests the power supply in a given product is not ideal.
But then no power supply is perfect and probably never will be, not in my lifetime.
The Naim power supply upgrades show what happens when you improve the supply as seen by the electronics. But it is at ever increasing cost.
The mains cable upgrade is just another way to improve this, in that it provides some noise filtering without degrading mains impedance parameters, so the power supply has less crap to deal with, but the smarter cable will be more costly in either time and effort, materials or both.

There is an old adage to consider here: it is better to eliminate a problem at source than to try to deal with the consequences of that problem at every destination. For example, it is wiser to fit a suppression device to the noisy motor, or switch contact, than to fit a filter on the mains input every sensitive device.
In the same way, it is wiser to reduce the amount of crap getting inside an amplifier or source via it's mains connection, rather than try to deal with whatever that crap may be once inside it.
I suspect this partly explains why Naim's Power supply improvement scheme involves using external boxes, rather than upgrading the supply fitted inside the amplifier or source device i.e. the unwanted crap is kept outside of the box that contains the sensitive circuits.

Tonytronic.
Posted on: 12 December 2009 by tonytronic
By the way, I apologise if my offerings give offence. Eek
My intention was to try to give some rational, non-subjective reasons why a PowerLine or similar mains cable might make a difference. Simple as.

As for the people in this forum, I have the greatest respect for you all! Yours views about what you hear/don't hear are always interesting and are never be taken as offensive by me. They are considered as valid and equally important views.
My thanks to you all just for being here and being prepared to read my ramblings.
Respect to you all.

Tonytronic. Cool
Posted on: 12 December 2009 by likesmusic
tonytronic, you didn't offend me in the slightest. And your contentions are rational, though whether they are true or valid is entirely arguable. Are you claiming that 'good' mains lead filters out all frequencies above 50Hz (as in a low pass filter) or just that it filters out multiples of 50Hz (as in a notch filter)? Or are you actually withdrawing your claim that mains leads filter the harmonics of 50Hz when pressed to justify it?
Posted on: 12 December 2009 by tonytronic
likesmusic said

quote:
Are you claiming that 'good' mains lead filters out all frequencies above 50Hz (as in a low pass filter)

Big Grin HaHarrr! LOL!!! Good one! Err... No.

quote:
...or just that it filters out multiples of 50Hz (as in a notch filter)?

Big Grin Big Grin Big Grin HaHaHaHarr! LOL!!! Nice try. But again, No.


quote:
...are you actually withdrawing your claim that mains leads filter the harmonics of 50Hz


Very comic. And in response ... Razz
I did not make such a claim - and you know that I wouldn't do so, don't you!
To clarify for others - the list of 'unwanted' signals is a quite seperate issue and nothing to do with what any given mains cable might affect!

Look I'm sorry, I hope your trying to be funny, because otherwise my laughter at your questions might cause offence - and we wouldn't want that, would we? Equally I know you wouldn't be wanting to offend by asking what others who are less tolerant might interpret as poorly disguised derisory questions.

Luckily, I don't see it that way.
Thanks for the laugh! Have a nice day. Cool

Tonytronic.
Posted on: 12 December 2009 by Julian H
Sean

Google Cullen Circuits and Audiocom

J
Posted on: 12 December 2009 by likesmusic
quote:
Originally posted by tonytronic:

quote:
...are you actually withdrawing your claim that mains leads filter the harmonics of 50Hz


Very comic. And in response ... Razz
I did not make such a claim - and you know that I wouldn't do so, don't you!
Tonytronic.


tonytronic, you did indeed make such a claim. Your exact words were:

quote:
Originally posted by tonytronic:

"Mains power" is NOT just 50/60Hz pure sine wave power. It also contains, amongst other things the following free 'extras';-

a) harmonics (multiples of the power frequency eg. 100/120Hz, 150/180Hz, in various amounts right up and through to Khz multiples).

.. also consider that the design and construction of a mains lead can be varied, at a cost, to affect the 'mix' of above factors that make it through to the equipment.

Tonytronic Winker


Is that not absolutely a claim that a mains lead can be made to affect the mix of 50Hz harmonics that make it through to the equipment?

And what's wrong with being asked to justify it?
Posted on: 12 December 2009 by GrahamFinch
quote:
Graham Hi ,I wasn't implying that you were stupid, just responding to Munch who said I must be deaf because I couldn't hear a difference when I tried the powerline, aplogies.


Apology accepted. My feedback on the DAC seems to have stirred up some controversy about power cables. Not my intention.

Have been too busy today to do any serious testing. I did try an opitical connection from the Sonus as suggested by someone but it was only a cheap Belkin optical, not a decent one. Sound was smoother but also duller, less detailed\spacious etc. I still think I need to try the DC1 and have mentioned this to my dealer. Whether it would be too good given the Sonus feed I don't know.
Posted on: 12 December 2009 by Don Atkinson
Likemusic,

Most of us use our ears to decide whether something affects hifi sound or not.

No need for oscillascopes or other fancy scientific gadgets.

Cables do affect the sound, according to my ears and those of many others. Obviously you are not afflicted in this way and for you that is excellent news - no need to spend significant sums of money on Powerlines or Hilines!!!

Tony has tried to help you by outlining some of the possible reasons that might explain how this comes about. Plenty of room for a PhD Thesis in there IMHO

Cheers

Don
Posted on: 12 December 2009 by AMA
quote:
But don't you think it is the job of the power supply inside the product to deal with these issues, rather than an external mains lead?

likesmusic, you spot on. Some elements (not all of course) -- mostly those dedicated for resisting RF penetration in/out PS -- can be arranged as a part of PS. You can find this approach in Linn designs or Mark Levinson designs. But building some PL elements inside a Naim PSU will add the same PL cost. I mean the end result will cost you the same money.
Meanwhile Naim commercials are happy as they enjoy PL sales over the non-naim world as well. My friend uses PL for his tube setup. It would have not happen if PL was built-in in Naim PS.

I agree with you in that one day Naim can switch to the new generation of PS which use stock mains.

But today I keep on the practical lane -- to my ears PL produce audible enhancement on the Naim PS, multiple Pls multiply the effect so I bought 4 Pls and consider them as a part of Naim PSs -- with very marginal cost increase.

There is a very popular claim that last meter of power cord can not improve the electrical power propagating for miles through the poor strands in a highly contaminated environment. This is not about the power behind the wall -- this is more about the power out of the wall -- and how you deliver it and split it to the gears, including grounding issues, picking RF and interfering with other gears.

For those who claim PL does not improve sound -- I suggest to repeat audition with a proper setup.
To get a maximum effect -- listen for stock mains and then change them all to PLs: CDP, preamp and poweramp. Check for sound clarity and micro-transients.

If still not audible -- lucky you are! Save 1,500 bucks on 3 PLs and be happy!
Posted on: 12 December 2009 by likesmusic
Don, I would be quite happy to let my ears decide whether a piece of cable could remove harmonics of 50Hz. 50Hz is somewhere between G and Gsharp - just about the 'blue' note in the key of E. So simply connect such a cable between your amp and your speakers, play any blues in E through it, and all the bent minor thirds will go. If tony's right that is.

Just because something 'might' be possible, doesn't mean that it is.

I am not disagreeing with the observation that mains cables affect the perceived sound of a system. I am asking for evidence that this is due to them filtering harmonics of 50Hz from the mains. Unless of course they are wrapped round a magnet!
Posted on: 12 December 2009 by likesmusic
Graham I'm sorry I've messed up your thread.

I have to say that I'm disappointed that despite being lucky enough to have one of what is supposed to be the best DACs in the world in your house, you weren't really that pleased with the sound and started fiddling with cables and power supplies straight away. I'd have hoped you'd have been blown away with the thing as it stood.

A couple of questions:

Does the Sync light come on with your Sonos or other sources? This indicates at least a certain level of quality in the source.

Have you got the Signal Ground switch in the right position?
Posted on: 12 December 2009 by Don Atkinson
quote:
I am asking for evidence that this is due to them filtering harmonics of 50Hz from the mains


I think you're on the wrong forum for that sort of info. If you try Pink Fish and ask Paul Ranson, I think you will probably get a concise, clear answer.

Cheers

Don
Posted on: 12 December 2009 by Don Atkinson
Grahamfinch

Has the DAC improved with a day or two of burn-in?

Generally,

Most of us know that adding a Power-supply/hiline/powerline to virtually any Naim system brings about a worthwhile improvement.

Some people think Naim should include these items as part of the initial product.

This means that a DAC would increase in cost from £2k.........an extra c.£5k for a 555ps and a further £500 each for the powerline and hiline.

Hence instead of £2k for a bloody good DAC, you would be obliged to part with £8k for a supreme DAC. Better, IMHO, to have a choice of starting points.

Cheers

Don
Posted on: 12 December 2009 by GrahamFinch
quote:
Graham I'm sorry I've messed up your thread.

I have to say that I'm disappointed that despite being lucky enough to have one of what is supposed to be the best DACs in the world in your house, you weren't really that pleased with the sound and started fiddling with cables and power supplies straight away. I'd have hoped you'd have been blown away with the thing as it stood.

A couple of questions:

Does the Sync light come on with your Sonos or other sources? This indicates at least a certain level of quality in the source.

Have you got the Signal Ground switch in the right position?


Yes to both questions - well at least the earth is switched as Naim recommend and I am not aware that the Sonus needs a different setting.

As to your comment why did you assume I was not really pleased with the DAC as it stood??? It blew the Dacmagic away as you would expect. I didn't sart swapping everything immediately, apart from swapping the Cobra 3for the NAim standard interconnect. I must again emphasise that I was giving my intial impression to first turning it on in the context of my own Sonus streaming system to a 552\250-2 and Allaes.

Ideally I want streaming to sound as close as it can to my CDS3/555ps which is of course partnered with a Hiline and a Powerline so it made sense to also try these with the DAC. I did this gradually and as I said the Hiline and Powerline make huge improvements. Naim themselves recommend the Hiline in the instructuion manual. So I was not "fiddling" straight off but following a logical process to get the best out of the DAC.

The DAC sounds great but realistically I did not expect the Sonus and the straight DAC to directly match the CDS3\555ps.

I still haven't done a direct comparison with the CDS3\555ps as this is more problemmatical but the fact that I am happily listening to the Sonus\DAC\555ps etc without the desperate urge to turn the CDS3 on is a testament to how good the DAC is. Don't forget the DAC will be used by people with better sources than my Sonos e.g HDX or CDX2 with digital output etc. There are a number of compromises with my Sonos set up but for you to assume I wasn't pleased with the DAC is not true.

It's singing beautifully at the moment.
Posted on: 12 December 2009 by Dev B (on the wheels of steel)
im looking forward to my dac. thanx graham!