As long as the sides are open I don't see any problem -- but if the amp doesn't use a toroidal power transformer, be careful what you put on the shelf above it.
space above amp in rack for cooling
I am purchasing a Vantage Point Euro rack for my newly assembled components after years of using a scan design teak wood furniture rack. As you may know, the Vantage is open on all sides, however my solid state amp (Classe CA 200) will only have 1 & 1/4 inches of space above it. will this be enough room for cooling given all sides are open. the amp is the newer version with the heat sinks on the sides. thanks.