Mic-Line-Pro - 3.5mm Male to 1/4 inch Male Line Level Audio Adapter

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Male to Male 3.5mm to 1/4in line-level audio input adapter with built-in attenuator for iPhone - Android devices
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Product Overview

  • iPhone - Android 1/4" line-level to mic-level audio converter input adapter
  • 1/8 inch (3.5 mm) 4 conductor TRRS Male to 1/4 inch (6.35 mm) microphone input plug with built-in attenuator
  • Connect your smartphone to a mixer or soundboard without a additional cables
  • Crystal clear sound recording, 100% guaranteed

The Mic-Line Pro allows you to connect a line-level audio source with 1/4 inch connector to the iPhone/iPad/iPod or other compatible device for quality recording. This adapter is NOT for recording from microphones. Use this adapter to record from headphone jacks, audio output jacks or from mixers and soundboards that have line-level outputs. The headset connections only have a mono mic input so, although you can connect a stereo signal, it will only record in mono. This adapter incorporates a built-in attenuator which reduces the line level signal down to a mic-level signal suitable for input for recording. This adapter works with mono or stereo 1/4 inch output Jacks.

-This adapter works with mono or stereo 1/4 inch output jack but only records in mono
-1/4" male to 3.5mm male
-TRRS(3.5mm end), TRS(1/4 end)
-Cord length 40 inches

How it Works: 
  1. From the Mic-Line Pro into your ¼” line out of your audio source.

  2. Plug the 3.5mm male end of the Mic-Line Pro into your phone, laptop, etc.*  

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

  4. 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 besides iPhone 12. 

Combine your Headset Buddy Mic-Line 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.



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

Answer: 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. 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: Why 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 a cable with a different style connector if I use an adapter?

A: Yes, you can use an adapter to convert from a 1/4 inch output or XLR, ect. 


All Headset Buddy products have a 1 year warranty! 

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

Warranty Information

Compatible Phones

iPhone 5 through iPhone 6s/6s Plus, iPad and iPod

iPhone 7 and above, use in combination with a lightning adapter

Macbook, Macbook Air and Pro, Mac Mini and Pro

Android smartphones and devices

Windows phones


Compatible Audio Sources

Mixers and soundboards with line-level outputs

Incompatible Phones

Older Samsung Galaxy models

iPhone 4s and below

Select Motorola Droid models

Sony PSP devices

Incompatible Audio Sources

Microphone - use our microphone adapters

Outputs that are mic-level

Headphones with a 3.5mm connector

"Line" audio such as a headphone jack on another device (smartphone, computer, etc.) - please see our other Line-Level cables

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