New floating wall design - How to Deal With a Hot Amp?

[rcoundon]

Having been inspired by a number of the threads on here - specifically Groove's project - Groove's new lounge with floating wall build
I've decided to start to plan something similar. My first problem is that I have an Onkyo 875 amp which runs very hot.

I like the idea of a collection of cabinets to hold the AV gear however I think the amp may well incinerate the cabinet. I've looked at some floating shelf examples which would provide the necessary ventilation but I'd prefer having some storage space and have the equipment in cabinets.

Can anyone help me by advising on some options, maybe from experience?