Maybe, I'm not sure. It was something that affected performance negatively but gave a better SINAD.
Like
@Music1969 says, the only option is to d¤¤k around with the in/output impedances to lower the measured noise.
Doesn't really "affect performance negatively", but simply passes the monkey to other gear in the chain.
If you're anxious, just look up the impedances in the spec sheets of your gear. Asssuming none of them are abnormal, the "SINAD cheater" very likely won't do any harm.