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RME User Forum → ADI-2 & 2/4 Pro series, ADI-2 DAC series → Pourquoi 2 puces AK4493 sur l'ADI-2 PRO FS R BE ?
Bonjour,
ADI-2 DAC FS possède une puce DAC (actuellement ES9028Q2M) alors que l' ADI-2 PRO FS R en possède 2 (AK4493).
Est-ce bien exact ?
ADI 2 PRO utilise donc 1 puce par canal ?
Est-ce pour améliorer la diaphonie ? Aussi pour d'autres raisons ? Lesquelles ?
Est-ce audible pour un usage monitoring / hifi ?
Merci.
Bastienseig
Bastien,
English is our preferred language here. 
No matter how much Maille Moutarde I consume, the French Language is still not an easy one for me.
I feel as if you're asking if there is an audible difference between the AK and ESS chips? No. There is not. There IS a difference amongst DAC Filter options, but beyond that? Nothing for me to comment upon.
In my opinion, whichever version RME you have is the BEST ONE!
Meilleures Salutations!
Curt
EDITED (correction from Matthias in the next posting)
Translator: https://www.deepl.com
%---------Bastienseig's posting translated -----------------------------------------------------------------
Hello,
ADI-2 DAC FS has one DAC chip (currently ES9028Q2M), while ADI-2 PRO FS R has two DAC chips (AK4493).
Is this correct?
So ADI 2 PRO uses 1 chip per channel?
Is this to improve crosstalk? Also for other reasons? What are the reasons for this?
Is this audible for monitoring / hifi use?
Many thanks.
Bastienseig
%-----------------------------------------------------------------------------------------------------------------------
The ADI-2 Pro has two DACs so that you can, for example, drive active monitors and headphones or even two headphones at the same time. The latter is very useful when you want to compare two headphones.
> So ADI 2 PRO uses 1 chip per channel?
If I remember correctly, the two DACs are being used per channel in the following case:
- Connecting balanced headphones
> Is this audible for monitoring / hifi use?
No, only in the case of balanced headphone mode you will notice, that
- volume for the headphones is even louder
- e.g. SNR is tad a bit better, but a few dB SNR more are not audible and do not deliver better sound
The SNR is already at a very high value where the human ear is not able to recognize any difference, you simply do not hear any noise at all.
There are further differences in the feature set between ADI-2 DAC FS and ADI-2 Pro FS R BE. I have compiled the most important ones in this blog article. In addition, this article provides further interesting information.
https://www.tonstudio-forum.de/blog/ind … ses-EN-DE/
%----------------- translated back / traduit en retour ----------------------------------------------------------
L'ADI-2 Pro possède deux DACs, ce qui vous permet, par exemple, de piloter des moniteurs actifs et des casques, voire deux casques en même temps. Ce dernier point est très utile lorsque vous voulez comparer deux casques.
> L'ADI 2 PRO utilise donc 1 puce par canal ?
Si je me souviens bien, les deux DACs sont utilisés par canal dans les cas suivant:
- connexion d'un casque symétrique
> Est-ce que cela est audible pour un usage monitoring / hifi ?
Non, seulement dans le cas du mode casque symétrique, vous remarquerez que le volume du casque est encore plus fort.
- le volume pour le casque est encore plus fort
- Par exemple, le rapport signal/bruit est un peu meilleur, mais quelques dB de plus ne sont pas audibles et n'apportent pas un meilleur son.
Le SNR est déjà à une valeur très élevée où l'oreille humaine n'est pas capable de reconnaître la moindre différence, vous n'entendez tout simplement pas de bruit du tout.
Il existe d'autres différences dans les caractéristiques de l'ADI-2 DAC FS et de l'ADI-2 Pro FS R BE. J'ai rassemblé les plus importantes dans cet article de blog. En outre, cet article fournit d'autres informations intéressantes.
https://www.tonstudio-forum.de/blog/ind … ses-EN-DE/
Traduit avec www.DeepL.com/Translator (version gratuite)
P.S.: it would be very kind if you could use deepl.com translation services to translate your questions into English, it makes support much easier as English is the main language on this forum.
P.S. : il serait très gentil d'utiliser les services de traduction deepl.com pour traduire vos questions en anglais, cela facilite grandement le support car l'anglais est la langue principale de ce forum.
Nicely answered and all correct, except
>- different PEQ settings per ear
That's just different per channel, and has nothing to do with using a stereo DAC chip in mono mode.
Nicely answered and all correct, except
>- different PEQ settings per ear
That's just different per channel, and has nothing to do with using a stereo DAC chip in mono mode.
I "learned" differently, but in real world practice, the Dual PEQ is indeed a wonderful tool! Neither our Ears, nor our Rooms are perfectly Acoustically Symmetrical! In my use case, the ability to accurately, and repeatably apply a tiny bit of treble shelf to my right channel has been quite helpful, and surely easier than climbing through Guitars, etc to access the shelving controls on my monitors!
On Noise? The RMEs range from "inaudible" noise to "even more inaudible"
How far shall we go with this? You can't hear it either way! 
These RMEs are curiously quiet devices.
Just saying...
Curt
RME User Forum → ADI-2 & 2/4 Pro series, ADI-2 DAC series → Pourquoi 2 puces AK4493 sur l'ADI-2 PRO FS R BE ?
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