Not really. These amps don't actually have anywhere near rated output so at impedances of 32, 64, and above they are less powerful than some of the more ridiculous headphone amps that are out there. If you limit it with a preamp and in software aside from the catastrophic failure modes that apply always it's not likely to be instant death for anything. I just wanted some advice since I have one on hand and second opinions like yours are always valuable. But if you all warn me off there must be something to it. I just wish I knew what if it is obvious.
Edit: BTW sorry if I am offending anybody or if people think that I am trolling. I understand that this site is relatively serious so I am asking seriously. The consequences on safety are of course paramount, but people do not seem to balk at using Class A power in the extreme for headphones, what is the difference with Class D?