CorOS Version: 2.20 Sometimes when I change my presets, the volume is muted until I move my expression (volume) pedal: I tried unplugging the expression pedal and the same thing happens. I have to plug it back in to get any sound. I have done a factory reset and reloaded one of my back ups and …

Have you tried deleting the volume block, saving the preset, and then re-adding the volume block with EXP assignment, and saving the preset again? There appears to be a known bug with the volume block as several users have reported this. Just wondering if there is a workaround until a hotfix comes…

Yes, I have tried that and it makes no difference.

Neural is aware of this bug. I’ve already emailed support and they said they’re working on a hot fix.

The volume block keeps cutting even if I switch blocks (unrelated to the volume) on and off sometimes. Also if I use the undo/redo function after changing a parameter on a block the volume cuts and I have to reset the expression pedal. This fucking sucks

I’ve just found a similar issue. I have the toe switch on my mission pedal set to turn wah on and volume off, then wah off and volume on. so my pedal swaps between being a wah and a volume . I have this on every preset I use. Now when when I swap preset , both the wah and volume block are off until …

no new setting, it’s just probably the bug from the latest update. If resetting the assignment of inverting the Bypass for the 2 blocks doesn’t work, then it’s probably going to be an issue till the hotfix drops

I’ve just done a quick search to see if I can roll back to the previous software. I’m guessing I can’t. This renders every preset I use unusable for now, and with gigs imminent, that’s slightly annoying…

that’s right, the OS won’t be rolled back even if you load an older backup. Hopefully a hotfix will come very soon. Do you have physical pedals you can use in an emergency?

I can find a away around it… Thanks. I’ve never really been affected by the glitches other people have found before, so I didn’t fully appreciate how frustrating it can be. But on the other hand, I can barely comprehend the level of programming required to make the QC do what the QC can do so I sha…

I have exactly the same issue. When shifting between presets no volume until I move my Mission expression pedal. Weird thing is that it doesnt happen every time. Only started happening after latest update.

Volume cuts out when changing preset

Quad Cortex Bug Reports

xush October 13, 2023, 9:56pm 14

Might be worth trying this workaround:

Topic		Replies	Views
Volume mutes after changing preset Quad Cortex	38	1471	November 5, 2023
WORKAROUND: For crash and reboot when 'Bypass' is assigned to expression pedal - CoreOs 2.2.0 Quad Cortex	17	1121	October 26, 2023
Preset changes through midi cause the volume pedal to jump to zero Bug Reports presets , quad-cortex , midi	17	340	February 18, 2026
Volume burst using exp. pedal as master volume Feature Requests	7	453	February 23, 2023
Default Wah Setting after 2.2.0 Bug Reports	20	1248	October 28, 2023

Volume cuts out when changing preset

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