Speaker Clarifiers?

Aren't the various crystals on the market supposed to have the same effect as the  Speaker Clarifiers?

I have not tried the audio magic clarifiers but do have the walker audio HDL's & can say they are a worthwhile tweek. Greater stage definition & a cleaner top end (without roll off) with my Tekton's. 

In the category of : Things you should not spend money on until after you've hired an acoustic consultant.

Things you should not spend money on until after you've hired an acoustic consultant.

... or had your ears checked by a good audiologist

It is my belief that cables, pucks, and clarifiers are popular because they are easy to experiment with and easy to get into the house without raising suspicions in one’s mate that a lot of money is being spent for dubious ends.
On the other hand, for sure rewards in better sound, I’d suggest addressing room acoustics with known science and engineering.