Tube amp on the floor or on the rack?

It doesn't hurt anything to place the open chassis tube amp on the top shelf of your equipment stand. I've done this but of course my stand is a hefty unit and able to handle the weight. This is not the rocket science that some people make it out to be.

If it is a CAT JL1 @ 240LBS. PER SIDE then ALL you can do is to put it on the floor...anything else causes back injury.

Thank the Lord that I evaded a great purchase of said units.

Weight may be a value indicator, but there's something to be said for those flyweight SET amps.

If the rack is VERY sturdy, you could put it on top. Otherwise keep it low. The rack I've got now is quite wide and deep, so it is very sturdy and supports over 600lbs of stuff and you could kick it without making it budge.