Audio
Allen & Heath Qu troubleshooting
The Allen & Heath Qu problems live-event techs bring to Ask Roadie most (also called AH-QU-16, AH-QU-16C, AH-QU-24, AH-QU-24C). Pick your symptom, or describe your own in plain words, and get the likeliest fix first, with the manual page when there is one.
Common Qu errors & problems
What techs run into most, and what's usually behind it. The step-by-step fix for your exact unit is in Ask Roadie.
- Step-by-step fixGet the fix →
New AudioRack (AR2412 / AR84 / AB168) not working with the desk
Likely cause: A&H periodically re-spins AudioRack components; the matching desk firmware is what recognises the new revision, so a firmware update is the fix rather than a hardware fault.
- Step-by-step fixGet the fix →
No audio at all from the main outputs
Likely cause: The LR bus is the fixed main output on the Qu; a common no-sound cause is monitoring/routing to the wrong socket or an active AMM/Ducker holding levels down.
- Step-by-step fixGet the fix →
Noise, dropouts or glitches on USB-B recording/playback
Likely cause: USB audio glitches are almost always host-side latency/power management rather than the desk; disabling USB suspend and background interrupts keeps the stream fed.
- Step-by-step fixGet the fix →
Qu not recognised as an audio device in Windows (USB-B)
Likely cause: Windows needs the A&H driver to expose the 32x32 USB-B stream as an audio device; hubs and shared USB controllers cause enumeration failures.
- Step-by-step fixGet the fix →
Qu-16 / Qu-24 / Qu-32 quick spec reference
Likely cause: A fast field reference for sizing/power/preamp counts pulled from the A&H product pages and technical datasheets.
- Step-by-step fixGet the fix →
USB drive not recognized / won't format in the desk (Qu-Drive)
Likely cause: The Qu needs its own on-desk format for reliable multitrack streaming; an unformatted or exotic-partitioned key fails silently.
Not on the list? Describe it your way, or paste the error code off the display. Ask Roadie works the problem with you until it's fixed or you have a clear next move.
How Ask Roadie helps with the Qu
- 1. Pick the Allen & Heath Qu. It's already in the list.
- 2. Describe what you're seeing. In your own words, or the error code off the screen.
- 3. Get the likeliest fix first. Steps in order, the manual page when there is one, and a note when other techs have confirmed it.
- 4. Still broken? Tap 👎 and it keeps going from where you left off.