I have this lav mic:

Amazon product link: Audio-Technica ATR3350 Omnidirectional Condenser Lavalier Microphone

And this audio interface:

Amazon product link: BEHRINGER audio interface (UMC22)

How can I connect the two?

I tried connecting the mic into my computer directly but the pre amplifiers are terrible.


This isn't the best sort of lavalier to use with pro/semi-pro interfaces. You need something that has both an XLR termination and an internal power adapter from 48v phantom to the electret bias.

It may be possible to connect this lavalier, but I can't be sure it will work.

You will need to unbalance the output of the TRS connector:

Tip -> XLR Pin 2 Ring/Sleeve -> XLR Pin 1 and 3

It's not clear what the purpose of the ring connector on the lavalier is being used for. Signal is most likely Tip/Sleeve.


Many Lavalier mics require what I tend to call Plug-in-power. This is a low voltage, say 3 to 5 Volts. If you apply 48Volts to the mic it would possibly destroy the lavalier mic.

The ATR3350 is unusual in that it allows using a battery in the built in battery box. This means that you could, possibly, connect the mic directly to a line-level input.

The solution I recommend is getting a specific converter connector for connecting the mic to the XLR input, giving you full control over gain. One specific example of product is RODE VXLR+ http://www.rode.com/accessories/vxlrplus which would supply Plug-in-power to the microphone and you would not need the battery. It would as well be more future safe as you can use other lavalier mics with it. A slightly different connector is the RODE VXLR (without the + ) http://www.rode.com/accessories/vxlr . At first sight this seems to be a better fit for the ATR3350, but it is not my first choices.

Spoiler alert: you can probably find similar products from other sources.


I have the same mic (ATR3350) and was dealing with this issue. The tip and ring are the same output, so you can use a splitter, that would divide the TRS to TR(left)/TR(right) and use either one of those outputs to plugin to the interface. This is the adapter I'm using (Hosa YMP-434). Make sure you have phantom power OFF. You don't want to fry the microphone. https://www.amazon.com/gp/product/B0010D0HO0/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

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