Oh sorry, I missed the part about being "the size of the 4i4". I thought you were thinking about using the 4i4 as a replacement to the DBX.
The DBX doesn't need to be mounted to a rack btw. It sits clean on any flat surface like your desk. The only thing that's not optimal is it doesn't have a power switch on it and you should keep it off when not using it.
Personally I have mine hooked up to a surge protector with an on / off switch, so I don't put any stress on the plug. You could also use a remote control surge protector so you don't need to fiddle with manually turning it on / off like a barbarian.
The DBX doesn't need to be mounted to a rack btw. It sits clean on any flat surface like your desk. The only thing that's not optimal is it doesn't have a power switch on it and you should keep it off when not using it.
Personally I have mine hooked up to a surge protector with an on / off switch, so I don't put any stress on the plug. You could also use a remote control surge protector so you don't need to fiddle with manually turning it on / off like a barbarian.