Teardown Confirms Digital-to-Analog Converter in Lightning EarPods and 3.5mm Adapter - MacRumors
Skip to Content

Teardown Confirms Digital-to-Analog Converter in Lightning EarPods and 3.5mm Adapter

Vietnamese website Tinhte has shared a teardown of Apple's new Lightning EarPods and Lightning-to-3.5mm headphone jack adapter included in the box with iPhone 7 and iPhone 7 Plus. The video confirms that, as expected, each accessory is equipped with a small digital-to-analog converter.

lightning_dac
The chip in the adapter, labeled 338S00140 / A0MU1621 / TW, does not have branding for any particular manufacturer, but Apple typically sources its audio-related chips from Cirrus Logic, which produces digital-to-analog converters. The chip in the EarPods is nearly identical, with a label of 338S00140 / A0QK1623 / TW.

The inclusion of a digital-to-analog converter, or DAC for short, enables both the new EarPods and traditional analog headphones with 3.5mm jacks to function over the Lightning connector, which delivers digital audio. The tiny chip is protected by a metal shield and two layers of plastic.


Apple controversially removed the 3.5mm headphone jack on iPhone 7 and iPhone 7 Plus, forcing customers to use a growing selection of Lightning-equipped headphones like Apple's own EarPods, wireless Bluetooth headphones, or traditional headphones connected via the Lightning-to-3.5mm adapter.

Popular Stories

Apple Watch Ultra 2 Black Titanium

New Apple Watch Series 12 and Apple Watch Ultra 4 Features Revealed

Sunday August 30, 2026 7:54 am PDT by
Bloomberg's Mark Gurman today further outlined what to expect from the Apple Watch Series 12 and Apple Watch Ultra 4 set to be unveiled on September 9. While it was initially rumored that Touch ID may be coming to the Apple Watch this year, Gurman reiterated that he does not expect the Series 12 or Ultra 4 to have any major design changes compared to the current Series 11 and Ultra 3 models. ...
Mac mini vs Studio Feature Sans Text 1

Apple Caught Off Guard by AI Demand for Mac Mini and Mac Studio

Sunday August 30, 2026 8:52 am PDT by
Apple's unusually timed announcement of new Mac mini and Mac Studio models this week was driven by unexpectedly strong enterprise appetite for AI hardware, according to The Information. Apple normally releases new Mac models in the autumn, closer to October or November, making this week's announcement unusually early, falling just before the anticipated arrival of new iPhone models. The...
Mac Studio Feature

Apple Seemingly Made a Mistake When Announcing the New Mac Studio

Monday August 31, 2026 11:19 am PDT by
Apple's press release for the new Mac Studio with M5 Max and M5 Ultra chips last week initially stated that the computer had "next-generation SSD architecture built on PCIe Gen 6." However, as spotted by the French blog MacGeneration, Apple removed the PCIe 6.0 mention from the announcement shortly after it was published. The press release still mentions that the new Mac Studio has a...

Top Rated Comments

130 months ago
If there wasn't a DAC....how else would make sound?
Score: 45 Votes (Like | Disagree)
MrGimper Avatar
130 months ago
Apple controversially courageously removed the 3.5mm headphone jack on iPhone 7 and iPhone 7 Plus

Fixed that for you.
Score: 40 Votes (Like | Disagree)
Kaibelf Avatar
130 months ago
The strangest thing happened. I got my iPhone 7 on Friday, and despite it having no jack, the sun has continued to rise every morning. Who knew?
Score: 35 Votes (Like | Disagree)
masotime Avatar
130 months ago
It would literally be magical if it didn't include a DAC.
Score: 30 Votes (Like | Disagree)
Phil A. Avatar
130 months ago
If there wasn't a DAC....how else would make sound?
It would literally be magical if it didn't include a DAC.
You'd be amazed - I've seen quite a few posts suggesting that Apple had somehow changed the lightning port to output analog sound as it was "impossible" to include a DAC in the plug as there wasn't enough room!


DAC includes "protection" so you only can play iTunes purchased music?
Why would it? iTunes purchased music isn't protected anyway ;)
Score: 22 Votes (Like | Disagree)
falainber Avatar
130 months ago
I'm somewhat confused... Not by the presence of a DAC in the lightning headphones, but by the presence of the third audio amplifier found previously in Chipworks' iPhone 7 teardown. An amplifier is used on an analog signal, but the signal leaving the port is still digital. What am I missing here?

EDIT: added emphasis :D
The third DAC is probably used to create thr hiss.
Score: 13 Votes (Like | Disagree)