Yes, I mentioned also in the other forum about the optional L-Shape screw into the side brackets for rack mount. But, I wasn't thinking through clear enough as usual. My rack mount gear all weighs in under 5 lbs or less. My PA Speakers are Active so I do not have any external amps. I would imagine this axiom Amp is quite heavy and some major engineering maybe needed to support the weight on to L-Shaped brackets.

Pioneer sc-1525
M80 HG Cherry