Issue in setting up inputs and outputs in Logic Pro on iMac

I have interfaces with a IMac with Logic Pro. Having an issue with setting up the inputs and outputs? Each Interface is 8 channels but I can’t find my inputs? It says I have 26 channels per interface and confusing me? What is the best output? I only get sound on buses?



[Re-Titled by Moderator]

Original Title: setup help with the inputs and outputs

Posted on Aug 17, 2025 09:23 AM

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6 replies

Aug 18, 2025 01:13 AM in response to 2x6studWall

ok, I would recommend to start first with only one soundcard. If that works, you can setup the other as well.


"26" audio channels means here you can have Simultaneous I/O up to 26 inputs / 26 outputs (at 44.1 or 48 kHz), with 8x8 analog and 16x16 digital (ADAT) + 2 SPDIF available.

8 + 16 + 2 = 26

But you might very likely only use the 8 analog in and outs.


Are you able to get one soundcard to work including accessing all 8 inputs and outputs in Logic?

If so, you can setup now the second one. Usually this should be done using control software provided by Presonus. I don't own presonus hardware, but it should work in a similar way to others.


Aug 26, 2025 03:58 PM in response to 2x6studWall

Shane gave you great advice to use the Presonus Universal Control app. It's is an important first step. That app can install any firmware updates and drivers necessary to use them on your Mac. Check the documentation for those interfaces for details on setting them up on a Mac.


As for outputs, you can probably set Logic to use either one of those devices. Whichever one you have your monitors or headphones plugged into.


If for some reason you're only getting outputs from one of them and the inputs from the other one are not outputting, then you may have to daisy chain them together. Check their manual for instructions on that. A lot of times multi-channel interfaces like that have a connection for that purpose, such as an ADAT port on the back of each interface.


Hope that helps.


Issue in setting up inputs and outputs in Logic Pro on iMac

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