I've seen several heads come in rack-sized plywood racks; is it possible in any way to transfer these into your normal ATA flight case? I'm specifically looking at the old Trace heads. Sorry if this has been asked before, I tried a search but I couldn't come up with anything.
Just about anything that will fit into a standard 19" rack width can be mounted. HOW depends on the configuration of the amp, its available mounting screws, etc. If the head was designed for rack mounting, then you should be able to pull it from its original case, add rack ears (gotta have screw mounting points of sufficient solidity to keep the amp from working loose), and mount. If it wasn't designed for that but fits within the 19" rack, then you have to custom-fab rack ears or some kind of tray that it can sit on - in some cases you can use a tray and mount through the screw holes for the feet.
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