Rack Space above below AD16x DA16x

[Ghost Logic]

It depends on the temp of your studio and what you are racking above and below them, but IMHO I don't think they really need it--the apogee converters are not like the all discrete pieces that put off massive amounts of heat. FWIW, I leave one free space above (just to be safe) and have a relatively cool running (non-Class A) piece racked directly below my DA16X.

[not_so_new]

My AD-16X sits on the bottom of a shelf type rack with no air gaps through the shelf (long story) and nothing below it and my DA-16X sits above it with one rack space between them, no heat problems so far but I have not been running the DA-16X so I guess we will see when I really start using it.

If the unit directly below the bottom converter does not put out a bunch of heat I think you would be fine with something directly underneath it.