What is the DA converter inside the iPhone

Anyone know what is the brand of the DA converter inside an iPhone?
Before any of you geeks jump on this.. no, am not talking about the video converter.
I am talking about the DA converter for the headphone jack.
thanks

Sorry, but I do not know how the Wolfson chips would compare, but if you're referring to Apogee and Prism professional audio products, then I would not expect any cellphone to compare well to those or any other professional-level products in audio quality.

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What is the DA converter inside the iPhone

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