[FrostyMMB]

Quote:

 
Ok, that's just ridiculous. I'm A/Bing both my iP4 and my girlfriend's iP5 right now (!) and I hear no such difference, even with my more sensitive iems. It was difficult to tell the two apart.

 
 
It's not ridiculous at all. The iPhone 4 and iPhone 5 use different audio chipsets. The 338S0589 IC (containing the CLI1495B0 and CS42L61) is inside the iPhone 4, and the 338S1077 IC (containing the CLI1583B0 and CS35L19) is in the iPhone 5. Different chipset, different sound.
 
You may hear no difference between them, and that's fine. That's you and your earphones and your ears. I don't find it difficult to tell them apart; the difference was apparent on the first listen. After an hour with a dozen familiar tracks last night, it was even more clear to me that these two don't provide the same listening experience. Another brief listen with both today confirms. The change in tone is hard to miss, but I can see how the perception of dimensionality and air would differ depending on the earphone or headphone. Lossless files on the iPhone 4 sound better than LAME -V0 on the iPhone 4, but lossless files on the iPhone 5 sound worse than LAME -V0 on the iPhone 4.
 
Hopefully we can see some measurements soon.

 

[FrostyMMB]

I wanted to mention that the iPhone 4 is on iOS 5.1.1. I won't be putting iOS 6 on the iPhone or the iPad, so I won't be able to find out if software changes are a factor.

 

[tds101]

iOS 6 is not worth it ATM. Wait, please. I'm even having connectivity issues with my smartphone now when I tether my iPad 2. I NEVER had an issue before the update,...Apple is slacking now. :mad:

 

[anthony81212]

There's your answer to everything 

 Chipworks and iFixit did a complete teardown of the Apple 6 and the whole motherboard.
 
http://www.ifixit.com/Teardown/Apple-A6-Teardown/10528/2#s38334
 
"Chipworks cracked open the Apple 338S1077 to confirm that it is, in fact, a Cirrus CS35L19 class-D audio amplifier."
 
"The second image is of the Cirrus' CS35L19 die. Judging from the inscription, this package seems to be from the CS35L family, although it's not specifically listed on Cirrus' site."

 

[cyberalpha11]

There's your answer to everything 

 Chipworks and iFixit did a complete teardown of the Apple 6 and the whole motherboard.

http://www.ifixit.com/Teardown/Apple-A6-Teardown/10528/2#s38334

"Chipworks cracked open the Apple 338S1077 to confirm that it is, in fact, a Cirrus CS35L19 class-D audio amplifier."

"The second image is of the Cirrus' CS35L19 die. Judging from the inscription, this package seems to be from the CS35L family, although it's not specifically listed on Cirrus' site."

Is this Cirrus chip is better than the wolfson dac chip in 5th generation iPod?

 

[Achmedisdead]

Quote:

Is this Cirrus chip is better than the wolfson dac chip in 5th generation iPod?

That depends on who you ask.  There is no right or wrong answer in the endless Cirrus vs. Wolfson debate. Having had three of them with Cirrus hardware, I think they sound quite good. Others will go on and on about the supposed superiority of Wolfson.

 

[goodvibes]

We need to forget about the bits and just concentrate on the results. It's all about application.

 

[Chefano]

I must chime here.
Nowadays does not matter if there is a Wolfson or a Cirrus, what really matters is the implementation.
Im waiting my iphone 5, so I can only tell the dif between IP4 and the S3, and to my ears the IP4 simply beats S3 ass in almost aspects. Till Supercurio releases the VoodooSound for S3, there is no comparison.
When I get my hands in IP5 gonna post a review, and comparison between all phones.

 

[kuroshi]

First rmaa of iphone 5 is out, looks like the dac is indeed worst this time and the treble roll-off is confirmed. http://www.gsmarena.com/apple_iphone_5-review-822p6.php
 

 

[tds101]

Hmm, slight treble roll off. Still acceptable. Besides, 99% of the people here will use an LOD>AMP setup anyways. Me, hp out. But, I'm waiting to see what the Nokia Lumia 920 brings us.

 

[shotgunshane]

That graph shows no roll off with headphones attached and about .5 db from 10k to 20k without. I'd like to see a more tests with output impedance measurements. I'll be able to a/b tomorrow.

 

[Inks]

RMMA results provided by GSM-Arena
 
 

Test	Frequency response	Noise level	Dynamic range	THD	IMD + Noise	Stereo crosstalk
Apple iPhone 5 (headphones attached)	+0.00, -0.26	-90.6	90.6	0.0035	0.111	-56.2
Apple iPhone 4S (headphones attached)	+0.05, -0.10	-91.3	91.3	0.0068	0.071	-66.7
Apple iPhone 4 (headphones attached)	+0.01, -0.07	-90.4	90.4	0.0036	0.092	-68.4

 
The 5 is the worst of the 3, not significantly though. If the output impedance of the 4 is 1ohms, 2ohms for the 4S, my guess is a 4-5ohm output impedance for the IP5. The 5 does have the most treble roll-off of the 3, not a big difference but bigger than 4 to 4S. 
 
AGAIN 
It is not a fault of the DAC, matter of fact it has much less treble roll-off than the praised 5.5 Ipod with a Wolfson DAC. 

 

[K_19]

Hmm. That's just what I'm hearing... a warmer sound with a slight roll off at the very top. Not necessarily a bad thing as it actually mates well with my travel headphones (ESW10JPN, HD25 and Phonak PFE with grey filters) where most have a lively top end.

 

[tds101]

I only glanced the graph,...still looks quite acceptable to me. HP out is what I desire,...too bad the OS is currently broken. I do hope Apple get on the ball and either fix the flaws, or manage a quality update reincorporating Google back into the game.

My sis-in-law wanted this, and she's waiting for it to work correctly. And I'll base MY decision on sampling her iPhone 5. Bummer,...I still gotta wait for playtime!!! :
:mad:

 

[eke2k6]

All I'm saying is that I have both my iPhone 4, and my girlfriend's iPhone 5 right now in an A/B session, and I'm having trouble telling the two apart.