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Forums :: Gear

3.5mm mic jack into usb-c

8 replies [Last post]
Sat, 09/25/2021 - 16:11
AceVentura
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Hello, all. I record all my sessions in order to gauge my progress. My current rig for recording at home is this: bulletini into a Rolandmicro cube; line out from the Roland into iMac's 3.5mm mic jack; record into garageband on my 2011 iMac. 

Ill be ditching my iMac in favor of a MacBook Pro once the new ones come out in October but I'm pretty sure they won't have a line-in for a 3.5mm mic jack As the inputs will likely be limited to usb-c, SD card, and hdmi. Any thought on how I can connect the Roland to the new MacBook? Thanks in advance. 

Ace

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Sat, 09/25/2021 - 19:01
#1
mmarquez
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With s cheap adapter like this one

USB C Headphone Adapter to 3.5mm Audio Jack Aux Dongle: https://www.amazon.com/dp/B07Y84WXBX/ref=cm_sw_r_apan_glt_fabc_AW5366FY7...

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Sat, 09/25/2021 - 20:09
#2
AceVentura
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Mic not headphones

MMarquez, will this work w a mic jack? I know itll fit, but will it actually work? My understanding of this is that mic and headphone jacks aren't compatible. 

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Sat, 09/25/2021 - 23:27
#3
mmarquez
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It claims it works with TRSS connector

So, as long as your line out cable is TRRS it says it would work.

In any case, at 10 bucks + Amazon's return policy I would just get it and try.

I have this adapter, but unfortunately I don't have a TRRS cable. I also don't have a MacBook, but I tested the adaptor with my phone (Pixel 5, which only has a USB-C connector) and it recognized it as en external USB microphone. If I had the TRRS cable (which I will get one of, anyway, they're pretty cheap too) I would be able to record from a sound source connected to the phone via the adapter (I tried with my Zoom H4n but it didn't record anything, since the cable I plugged was just a TRS one).

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Sun, 09/26/2021 - 06:26
#4
AceVentura
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Great

Thank you. It is inexpensive so I'll def give it a shot. That it's TRRS should do it. 

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Mon, 09/27/2021 - 13:42
#5
Johndclemens
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This is USB-A. but you might

This is USB-A. but you might be able to find something similar in USB-C or use an adaptor:

https://www.adafruit.com/product/1475

It has both a headphone and mic input. I'm using one of these with my 2015 MacBook Pro to connect headphones* and it shows up directly as an audio output in macos; I haven't used the mic input yet but I assume it will also work. In any event it's cheap (like, the shipping cost me more than the part), so you might give it a try.

* Why, you ask? Because about a year ago my wife somehow broke off a headphone plug in the 3.5mm jack, and I can't get it out, and you can't replace the 3.5mm jack without replacing the whole motherboard (about $500). I was using bluetooth until I started playing the harmonica and recording myself, and because ot the lag, bluetooth won't work for that if you want to monitor the input.

Like you, I'm waiting for the new MacBook Pros in October. :)

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Mon, 09/27/2021 - 17:19
#6
mmarquez
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Tested TRRS, mixed/bad results

So, I got the TRRS cable, and I was able to test it, with mixed to bad results:

Using my computer headphones output, connected to the TRRS cable and then to the 3.5mm to USB-C adapter to my phone's USB-C port, I was able to record my computer's output from my phone (mono, that's it). I noticed a lot of static noise here, so either I'm doing something wrong or the connector is not very good.

Using my Zoom H4n headphone/line out, connected to the TRRS cable and then to the 3.5mm to USB-C adapter to my phone's USB-C port, I was unable to record anything. Maybe John's solution or similar USB sound cards withs split connectors would work better, they are also quite cheap.

I wouldn't use this method for recording myself because of the noise. I prefer to use my Zoom H4n instead, either directly or connecting it to the computer via USB (the H4n can act as an external sound interface via USB). It also allows stereo recording.

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Tue, 09/28/2021 - 05:17
#7
AceVentura
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Thanks

These are all pretty inexpensive options so I may end up trying a variety of them. The most important part for me was understanding the TRRS issue as I knew there was distinction between input and output but wasn't sure what it was nor what it was called. Understanding this gives me a frame of reference to work with. Thanks again. 

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Thu, 10/07/2021 - 15:44
#8
AceVentura
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Apple 3.5mm to USB-C Connector

Tried this one as it's only $10 but I got no results at all. The MacBook wouldn't even recognize the mic as an option and it wasn't registering any sound in Garageband. I'll order another item tonight from Amazon that's specifically designed for TRRS but I'm not hopeful.

Also, tried a multi-port connector that I have and it recognized the mic only as a displayport video input with very poor audio.

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