Why Am I Hearing Outputs 3/4 Through My Stereo Out

I keep hearing OUTPUTS 3/4 through my Stereo outputs (1/2).


I have a problem in a specific project where I’m trying to send audio through outputs 3/4 in Logic Pro, with the I/O plugin.


I'm hearing both the processed audio and the dry audio.


As if outputs 3/4 are somehow routed to my stereo out. I checked the output mirroring, it's not this. My interface isn’t monitoring it either, and when I work on different projects, the problem did not persist; meaning this is a project specific problem.


I’ve tried pressing command + zero to see if this is an environment problem, checking to see if outputs 3/4 have "cabling" on them. They do not seem to have any.


When the I/O plugin is set so that no input is selected I still hear outputs 3/4 DRY through my stereo output. I don’t know what to do.


If anyone could help, may God bless your good hearts.


It seems to be that no matter what I do, I CAN HEAR OUTPUTS 3/4 through 1/2.

MacBook Pro 14″, macOS 14.8

Posted on Dec 20, 2025 9:04 AM

Reply
6 replies

Dec 20, 2025 10:43 AM in response to ShalevMen

Also, this happens regardless of the track I put the I/O plugin on, and regardless of whether the Input is selected, when audio is sent through the I/O plugin to output 3/4, I hear it in the stereo out (and see it in Logic itself, meaning this has nothing to do with my audio device self monitoring the signal) - and if only output 3 is receiving audio, only the right channel of my stereo out gets that signal dry… Ie - I’m hearing outputs 3/4 through 1/2

Why Am I Hearing Outputs 3/4 Through My Stereo Out

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.