I racked my Neutron below a Tiptop Audio Happy Ending, which gives me ample access to the power and in/out jacks on the back. If you rack it below a deeper item you might have more problems with jack access: you'll almost certainly want a right-angle barrel connector for power, and right-angle audio and MIDI thru jacks.
The power switch can be left on, so that's not a problem. What's awkward is the MIDI channel DIP switches. Now, if I want to change those, I need to crawl around the back. Oh well.
The right ear has the Behringer warning triangle on, which is a nice touch, in case somebody doesn't recognise the garish red Neutron colour scheme (which I like, actually).
