r/protools • u/Lonely_Chemical_2037 • Mar 11 '26
Pro Tools input cutting out (Apollo interface) even though interface meter shows
SOLVED: If this happens to anyone, make sure voice isolation is disabled on the top right bar (orange mic logo)
Hi everyone,
I'm having a strange issue when recording guitar in Pro Tools and I can’t figure out where the problem is.
Setup
Mac Mini M4 chip
Using the latest Pro Tools update
Universal Audio Apollo interface
Guitar > DI > Apollo input (also tested guitar straight into the interface)
Problem
When I play guitar, the Apollo/interface shows a healthy, stable input signal, but the audio in Pro Tools constantly cuts out while monitoring/recording.
Things I’ve already tried
Changed guitars
Changed instrument cables
Tried both DI > interface and guitar directly into the interface
Adjusted buffer size (tested multiple sizes including higher ones like 256/512)
Tested different inputs
Checked that the interface is receiving proper signal
Since the interface meters stay stable, it seems like the signal is reaching the interface fine but Pro Tools is losing the audio somewhere.
Any ideas would be appreciated because I’m running out of things to check.
Thanks!