Mic-Line - Line-Level Audio Input Adapter for iPhone & Smartphones

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Record line-level audio from your mixer or soundboard into your smartphone or laptop!
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Product Overview

Easily record from a mixer or soundboard directly to your smartphone, laptop, or tablet! 

The iPhone-Mic-Line replaces your phone's microphone level audio signal with line level input allowing you to record on your device as if the sound was coming directly from it.

  • Record line level audio from your mixer or soundboard on your iPhone, smartphone.
  • Allows your external audio output to replace your smartphone's mic. Includes line mic attenuator that allows for line-level to mic-level conversion
  • Works with most phones that have a combined headset and microphone jack
  • Connect two audio sources simultaneously, just use a splitter!
  • Crystal clear sound recording, 100% guaranteed

Our line level input converter allows you to record audio on your iPhone from outputs such as a headphone jack or audio output jack such as a turn tables, mixers, soundboards or other professional audio equipment. The iPhone-Mic-Line replaces your phone's microphone level audio signal with line level input allowing you to record on your device as if the sound was coming directly from it.

The cable is approximately 13 inches long.

How it Works:
  1. From the line out of your audio source, plug in the cable required ex.(XLR male to 3.5mm TRS male). 

  2. Insert the male 3.5mm (1/8 in.) TRS plug into the female end of the Mic-Line(Blue Line In). 

  3. Plug the male TRRS end of the Mic-Line into your phone, laptop, etc.*  

  4. The device will recognize this as an external audio source and turn its internal microphone off allowing you to record using the external source. 

  5. Open your Camera App and record! 

*You will need a lightning, USB-C, or USB adapter depending on your device. Please note: Apple brand lightning adapters DO NOT work on iPhones except on iPhone 12. 

Combine your Headset Buddy Mic-Line product with any of these adapters for more uses:

This adapter works with all audio/video recording apps. 

For live streams; apps such as Larix work best. 

To test your Mic-Line please watch this video:

Worship The King Mic-Line Videos:


Great Customer Videos!

Our friends over at @studioscratches have put together a nice article on "How to Record High Quality Audio Directly into Your iPhone"

PLEASE NOTE: This adapter is NOT for recording from microphones. Please see our "Dynamic Mic to Smartphone" or "ECM Mic to Smartphone" adapters for these purposes. Also, sound input for smartphone connections is mono but most apps split the sound into left and right channels for playback in both ears. You are able to input stereo sound; however, playback will only be in the left ear.

Attenuation: -20 dBV
Male End: 3.5 mm (1/8)
Female End: 3.5 mm (1/8)
Cable Length: 12"


Q: Will this adapter work with a stereo audio source?

A: The combined headset jack on the iPhone and other devices only has a mono mic input so you cannot record in stereo. Most recording apps split the mono signal into both left/right channels when recording so the audio will play back in both ears. You can connect a stereo signal to this adapter but only the left side will be active; if you use a stereo-to-mono adapter on your input cable then it will make both left/right channels combined and active. There is a new stereo microphone product available which will allow for stereo recording using the docking connector; this is currently the only option available for stereo recording, Tascam IM2 stereo mic.
Q: When I open Facebook Live my audio defaults to iPhone mic instead of Mic-Line, what can I do?
A: Open your Facebook Live app, then plug your lightning adapter into your phone! 

Q: Do I need a different adapter for a microphone?

A: The iPhone headset mic input is a mic-level input. The mic-level signal is much lower than a line-level signal which is used in audio outputs. This adapter has a built-in attenuator which reduces line-level signals down to mic-level signal strength. If you connect a mic to this adapter the signal would be reduced to a point that you would not be able to hear it in a recording. Use the MIC versions of this adapter for recording from microphones.

Q: Can I connect two audio sources?

A: Yes, you can use a standard 3.5mm splitter adapter to connect two audio sources which will combine the signals from both sources into this adapter. Alternately, you could use a small mixer to combine the signals from multiple sources into this adapter. or purchase our new product, the Mic-Line Plus

Q: Will this work with the latest versions of iPhone that have removed the 3.5 mm headphone jack?

A: Yes! However you will need to use either the lightning to 3.5mm adapter that came with your iPhone or purchase one of ours, which can be found here



For further information about Headset Buddy's Warranty and Shipping & Returns policies select the imbedded links

Warranty Information

Compatible Devices

iPhone 5, 5s, SE, 6, 6 Plus, 6s, 6s Plus

iPhone 7, 7s, 8 and iPhone X will need to be used with a 3.5mm to lightning adapter. Our's can be found here and here

iPad and iPod

Macbook, Macbook Air and Pro (Including 2020), Mac Mini and Pro

Android smartphones and devices

Windows phones


Compatible Audio Sources

"Line" audio such as a headphone jack on another device (smartphone, computer, etc.)

Mixers and soundboards with line-level outputs

Headphone outputs

Incompatible Devices

Older Samsung Galaxy models and the Samsung Galaxy Note 5

iPhone 4s and below

Select Motorola Droid models

Sony PSP devices

Incompatible Audio Sources

Microphone - use the microphone version adapters

Outputs that are mic-level

Zoom H2n

Product Videos


(13 reviews) Write a Review

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  • 5

    Posted by Christophe on 23rd Aug 2016

    I test line in adapter iphone on my DJM800 mixer : sound quality good ! Excellent for the live facebook because i'm Dj

  • 5
    Line-level audio adapter for smartphones

    Posted by Toast on 21st Jul 2016

    Great little cable. Works precisely as advertised. Enables one to utilize their iPhone (as in our case) as both a camera and HQ audio transmission source for (again, as in our case) live-to-air streaming via Facebook (for free!). Took audio from our mixing console and, via this cable, plugged it into the headphone jack on an iPhone 6S. Facebook stream was excellent--both video AND audio--and just what we needed! Audio/Video sync is off by a negligible tad (audio slightly ahead of video). Enabled a perfect, entry-level starting point for live feeds of our church services online for those who can't join us in-person, but can join in via Facebook!

  • 5
    Perfect for Facebook Live Streams

    Posted by Aleksey Rayevskiy on 12th Jul 2016

    Works well for what i need it for!! Great for Facebook Live Streams, Awesome for Sampling without buying a $400 recorder! Must Buy for Streamers!

  • 5
    What i'v been looking for!

    Posted by Tom Klein on 27th Jun 2016

    im a dj,its what i need to go live on Facebook with excellent audio quality,,or filming short clips for my routines. connecting my mixer output to the line in cable that connected to my phone. great product! highly recommended.

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