Besides
that the iPhone 7 and iPhone 7 Plus is not the usual 3.5mm audio ports, we have become accustomed. Sales statistics show that the user took this technological change without much skepticism: buy the new iPhone better than previous versions.
The problem of compatibility headphones and headsets with standard Apple «Jack» decided to simply - complete with the iPhone 7 and iPhone 7 Plus customer can find branded adapter Lightning.
Guru showdown, curious guys from iFixit, finally got to the mysterious adapter and looked at what's inside it.
Price accessory only $ 9. Despite the low cost, the adapter is not as simple as it may seem.
Under the plastic housing of the connector "jack" is located four-group, no different from primitive adapters. At the other end, in the Lightning connector, a chip on which are located:
digital-to-analog converter (DAC)
analog-to-digital converter (ADC)
amplifier
The iPhone's previous models (up to 7 and 7 Plus) modules DAC and ADC installed directly inside the smartphone. The motherboard was installed for this purpose chip from Apple / Cirrus Logic IC number 338S00105. But even after Apple got rid of the audio ports and integrated in such a chip adapter, it still remains on the motherboard.
Apple can not renounce the use of DAC and ADC directly inside the unit due to the need to transform the sound coming from your iPhone microphone and is output to the speakers. The signal is still analog.
The German edition C'T has decided to test the difference in the sound when headphones are connected directly to the iPhone and using Lightning adapter.
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