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Are notebook/computer internal DACs any good? Any test/review done?

Biagiod

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Feb 6, 2021
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Hi all

I have a secondary desktop setup with my Lenovo Yoga 920 feeding via analog 3.5mm a pair of 2+1 active speakers. I listen to it whenever I work (a number of hours..)
I was wondering HOW the internal DAC actually performs.. Considering to get an external DAC obviously.

I tried a search on the forum but could not find anything... is there any test/review done on internal notebook DACs? Are they just horrible or plain vanilla? Mine is a Realtek set at 24 bit 48Khz exit

Thanks for any leads

Marco
 
The DAC chip it self is not a problem, the implementation is the trick. Laptop is extremely complicated device with tons of subsystems in small form factor where good/excellent DAC implementation is near to impossible.
 
is there any test/review done on internal notebook DACs?
We have some tests of MacBooks:
 
We have some tests of MacBooks:
We? Ahh - our sister site; EncryptedAudioScienceReview!
 
We? Ahh - our sister site; EncryptedAudioScienceReview!
Encrypted? Most American thing I've read in a while
america-hurricane.gif
 
Amir tested some sound cards a while back;


JSmith
 
The DAC chip it self is not a problem, the implementation is the trick. Laptop is extremely complicated device with tons of subsystems in small form factor where good/excellent DAC implementation is near to impossible.
I wonder if this is actually true. The reason may not be technical but commercial: there simply is not enough demand for excellent dacs in laptops. Audiophiles are an exteremely tiny subset of potential laptop buyers.
 
In Firefox, there's a button in the address bar:

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It's not great with Chinese, but you can get the gist of it. :)

I've only seen a few measurements of PC and laptop on-board sound. They seem to range from poor, to fair, I don't think I've ever seen one that's really great. :confused:
 
I wonder if this is actually true. The reason may not be technical but commercial: there simply is not enough demand for excellent dacs in laptops. Audiophiles are an exteremely tiny subset of potential laptop buyers.
The lack of commercial demand definitely is a factor but from pure technical standpoint standalone dac is a way more easy to be "perfect". Hell..even 3.5mm stereo jack is maybe the worst analog audio interface. Constrained form factor is unavoidable obstacle.
 
Tsk, you guys! Here's Amir's review (in English, non-encrypted) of a 'good' PC motherboard sound chip...

 
Tsk, you guys! Here's Amir's review (in English, non-encrypted) of a 'good' PC motherboard sound chip...


Even the performance of that "good" motherboard, is easily bested by some cheap dongles.

Also, there are hundreds of motherboards available at any one time and their performance seems to be all over the place, and a higher price doesn't seem to be any guarantee that sound section will be good. Unless you can find a measurement of the specific make and model you have, it's pot luck.

If you try it, and it sounds OK to you, then I guess it's good enough.
 
Even the performance of that "good" motherboard, is easily bested by some cheap dongles.

Also, there are hundreds of motherboards available at any one time and their performance seems to be all over the place, and a higher price doesn't seem to be any guarantee that sound section will be good. Unless you can find a measurement of the specific make and model you have, it's pot luck.

If you try it, and it sounds OK to you, then I guess it's good enough.

Yes, I know, I was providing it as a reference point (that nobody else seemed to find). Any of the well measuring dongles would be a far better option.
 
If DACs are a solved problem, and a $10 dongle can be pretty great, why are computers only poor/fair/very variable?
Why aren't good enough DACs in everything - a basic commodity?

Just price?
 
I measured the analogue output of my W10 Toshiba laptop and Lenovo tablet, and whilst they could certainly be bettered, they were perfectly adequate for transparency. Frequency response was totally flat 20-20kHz, noise around -90dB below 0dBFS and distortion below 0.01% (i.e. <-80dB) although that was the measuring limit of my analyser, so could have been better than that. Consequently, never saw the point of an external DAC. Having now changed my laptop to W11 Samsung, it doesn't have an analogue audio output so am using an old Behringer UCA202 for audio I/O

S.
 
Here is a very old review by Archimago with a Gigabyte motherboard. The take-away is this:

1741448829114.png


That's back in 2016. He must have gotten very lucky and chosen the world's worst motherboard for audio for his review! As you can see, all the devices have problems and don't output a perfectly flat line, but some are more egregious than others. His Gigabyte (white line) has severe bass roll-off below 200Hz, and his 2009 Macbook Pro (cyan) rolls off high freqs above 6kHz. The Dragonfly USB DAC has close to flawless performance.

Anyway, that article is old but still fun to read.
 
If DACs are a solved problem, and a $10 dongle can be pretty great, why are computers only poor/fair/very variable?
Why aren't good enough DACs in everything - a basic commodity?

Just price?
I'd say so. How many people don't buy a laptop because of the dac quality? Make 100,000 laptops and put a $10 dac in and you've spent $1,000,000. For what?
 
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