Pardon my ignorance, why does the iphones 6s have two Cirrus Logic Audio IC ?

[Guppy_]

As per the iFixit teardown:

Apple/Cirrus Logic 338S00105 Audio IC
Apple/Cirrus Logic 338S1285 Audio IC

https://www.ifixit.com/Teardown/iPhone+6s+Teardown/48170


And more specifically, how does this translate to sound quality?

 

[ProtegeManiac]

Hard to tell, those are proprietary chips that aren't on Cirrus Logic's website nor anywhere else either. Could be one for digital/DAC and one for analog amplification.

 

[Guppy_]

  Hard to tell, those are proprietary chips that aren't on Cirrus Logic's website nor anywhere else either. Could be one for digital/DAC and one for analog amplification.

Yeah, I tried googling and it just leads me to the ifixit link or sites linking to ifixit 

 

[MindsMirror]

My guess is one is a DAC and the other is an ADC.

 

[Whitigir]

hang on, if it does has one to DAC and one to Amplify...isn't it audiophiles level ?
 
Actually, there are 3 cirrus Chip
 
1x Cirrus Logic 338S00105
2x Apple/Cirrus Logic 338S1285 Audio IC (likely an iteration of the 338S1202 audio codec found in the iPhone 5s)

 

[UNOE]

I would like to know more on this as well.

 

[UNOE]

  hang on, if it does has one to DAC and one to Amplify...isn't it audiophiles level ?
 
Actually, there are 3 cirrus Chip
 
1x Cirrus Logic 338S00105
2x Apple/Cirrus Logic 338S1285 Audio IC (likely an iteration of the 338S1202 audio codec found in the iPhone 5s)

So the 2x Apple/Cirrus Logic 338S1285 Audio IC are DAC's or amps?

 

[Whitigir]

So the 2x Apple/Cirrus Logic 338S1285 Audio IC are DAC's or amps?

I am not sure, but I hear that they are proprietary ? So maybe the 2 in the back is for amplification so purposes and the one in the front is for DAC ? Idk, we need expert electrical engineer who specified into audio design to answer ? Lol...or I can audition it with my ears and say some impressions.

But he thing I don't understand is why using 3DAC....even if they were to amplify an analog...there is no need ? Idk, clueless about these specs

 

[Shubham Bassist]

One may be for mono speaker?
Other two for stereo Headphones?