Line outs from interface to digital in on iPhone isn’t working properly

Question

Level 1

4 points

Line outs from interface to digital in on iPhone isn’t working properly

I’m at a loss as to why this is happening.

I’m running out from a stereo line-out on my Apogee Quartet (a NICE, HIGH-END audio interface) into a 1/8” stereo to USB-C adapter into my iPhone 16.

The signal IS being picked up by iPhone but it sounds terrible dude. I’m at a loss as to why. It sounds muffled and is picking up maybe 1/10th of the actual frequency spectrum at best.

Things I’ve tried:

-Using a mono-summer from Audio-Technica between the cables (turns the stereo signal into mono; at first I thought it might’ve been some weird phase issue - obviously this did not work)

-Switching consumer line out (-10dB) to pro line out (+4dB); again did not work

-turning signal volume up and down on interface (again, didn’t work)

-Running signal through iRig 2 before USB-C converter cable (and again, didn’t work)

I’m at a loss here. I know other people have experienced this issue, as I’ve seen on Reddit, etc..

Has anyone figured out how to solve this issue?

What I’m trying to do: film short form content with my iPhone camera (the hooks of the beats and music I make) to put on Instagram. I want to use the actual output of my high end audio interface as the sound source of the video (not the ambient sound of my phone picking up the speakers in the room).

Someone please give me some suggestions here. I’m seriously dumbfounded right now. Linked to a video I uploaded to YouTube as an example of how it sounds.

https://youtube.com/shorts/RlOL0ClaQoY?si=DEtZUA8YlwUlknbj

Posted on Jan 25, 2025 10:33 PM

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Answer 1

SravanKrA

Level 10

432,632 points

Jan 25, 2025 10:37 PM in response to CullenJames

How to Contact the Manufacturer:

Apogee Electronics creates the world's best sounding audio interfaces and audio plugins. Learn more about how we changed digital audio forever. Apogee Electronics | Pro Audio Interfaces & Plugins
Product Manual: As mentioned, the product manual can be an excellent resource for finding contact information. Look for the "Support" or "Contact Us" section in the manual.
Product Packaging: Check the product's packaging for any contact details, customer support numbers, or websites provided by the manufacturer.
Manufacturer's Website: Visit the official website of the manufacturer. Most reputable companies have a support section where you can find contact information or submit support requests. https://apogeedigital.com/contact-us/
Customer Support: Look for a customer support phone number or email address on the manufacturer's website. Some companies even offer live chat support for immediate assistance.
Social Media: Many manufacturers maintain a presence on social media platforms. Consider sending them a message or mentioning them in a post to seek help.
Retailer: If you purchased the product from a retailer, they might also be able to assist you or direct you to the manufacturer's support channels.

When contacting either the app developer or the manufacturer, be sure to provide specific details about the problem you're facing, including any error messages, screenshots, or steps to reproduce the issue. This information will help them better understand and resolve the difficulty you're experiencing.

Remember to remain polite and patient while seeking support, as it may take some time for the developers or manufacturers to respond to your inquiries.

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Answer 2

CullenJames Author

Level 1

4 points

Jan 25, 2025 10:45 PM in response to SravanKrA

This has nothing to do with Apogee's product. They don't make their audio outputs any differently than the standard practices of the audio industry have been for generations. This is far more likely to do with either the cable that is converting the signal to USB-C or with the way Apple configured the USB port at the bottom of the phone itself, and I know this because other people, who've tried to do this same thing, but with different equipment, are also having the same problem. Again, this has nothing to do with the outputs on the Apogee interface. If I plug a standard set of studio monitors into the exact same outputs, I can perfectly good, clean sound.

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