This case is a perfect fit for the QU-6. Foam keeps it tightly secured in the case and it has a small wooden notch at the back which stops the desk sliding back. It also has a dedicated space at the back for cables or a router. I found I could store a 4 gang extension, 3m cat6 cable, internet router, 3.5mm - twin jack 3m cable, two power cables, desk lamp and tablet holder all in the back no issues. It's great as I can just rock up to a venue put it on a desk and take the lid off and then connect everything up and all the desk's accessories are already stored in the box.