# Volume Erratic

**URL:** <https://unity.neuraldsp.com/t/volume-erratic/23259>\
**Category:** Quad Cortex\
**Tags:** support\
**Created:** [September 7, 2026, 2:45am UTC](https://unity.neuraldsp.com/t/volume-erratic/23259 "2026-09-07T02:45:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Mark](https://avatars.discourse-cdn.com/v4/letter/m/e9c0ed/32.png) [@Mark](https://unity.neuraldsp.com/u/Mark)\
**Post date:** [September 7, 2026, 2:45am UTC](https://unity.neuraldsp.com/t/volume-erratic/23259/1 "2026-09-07T02:45:40Z")

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Volume jumps around erratically at some levels. Is this a potentiometer issue? Do I just need to get some contact cleaner somewhere in there? Unit is four years old.

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**Author:** ![h2loh](https://avatars.discourse-cdn.com/v4/letter/h/fbc32d/32.png) [@h2loh](https://unity.neuraldsp.com/u/h2loh)\
**Post date:** [September 7, 2026, 7:31am UTC](https://unity.neuraldsp.com/t/volume-erratic/23259/2 "2026-09-07T07:31:06Z")

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To see if it is the master volume knob: turn the master volume knob; when the output menu comes up, disable the output you are using. Now the master volume knob should not affect output at all.

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**Author:** ![HelenMarsh](https://avatars.discourse-cdn.com/v4/letter/h/a183cd/32.png) [@HelenMarsh](https://unity.neuraldsp.com/u/HelenMarsh)\
**Post date:** [September 7, 2026, 10:04am UTC](https://unity.neuraldsp.com/t/volume-erratic/23259/3 "2026-09-07T10:04:01Z")

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Before spraying contact cleaner, I’d isolate whether it is the Quad Cortex’s master control or the output path. Try the master knob with each physical output and USB output disabled in turn, then see whether the level jumps at the same knob position. Also test a different cable and monitor/headphone input. If the problem follows the master knob across outputs, save a backup and contact Neural support rather than opening it—contact cleaner can get into the wrong parts and may not help a worn encoder or potentiometer.

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**Author:** ![SelfTitledLP](https://avatars.discourse-cdn.com/v4/letter/s/ecc23a/32.png) [@SelfTitledLP](https://unity.neuraldsp.com/u/SelfTitledLP)\
**Post date:** [September 7, 2026, 2:48pm UTC](https://unity.neuraldsp.com/t/volume-erratic/23259/4 "2026-09-07T14:48:47Z")

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Probably will need Neural to repair the QC. This is a common issue with these. At least from all the posts on here and Reddit

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**Author:** ![dean701](https://avatars.discourse-cdn.com/v4/letter/d/aca169/32.png) [@dean701](https://unity.neuraldsp.com/u/dean701)\
**Post date:** [September 10, 2026, 2:04am UTC](https://unity.neuraldsp.com/t/volume-erratic/23259/5 "2026-09-10T02:04:29Z")

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had some problems with my new Mini last night with volume jumps when activating effects. Disabling the effect did not bring the volume level back down. I suspect 4.1.0 is causing issues. Did a factory reset. I’ll see it it persists.