Den Den-mensional Mushi

weapon name:den den-mensional mushi
description: A den den that is completely black, has a speaker inserted in it's mouth, contains 3 dials (One for locking on to a dimension, One for searching the dimension and one for volume), and it's eyes are just X's.
weapon special abilities: Finding sounds and songs in any dimension.
history: A weird version of the normal den den mushi, they were altered by chemicals,mechanics and x-rays to create a radio that can play any sound from any dimension (most of them are blank and noiseless). It is sold only on the future island of Transceiver as a souvenir, but it's expensive price and infuriating complexity makes it a low buy option. Only 500 people throughout the world have mastered the device.

Dimension as in another world?

Yes

So what could the owner see? The going ons of other worlds?
I'm not sure about this one, second opinions?

You can't see (Thats why the eyes are in X's.) It is only a Radio that can play sounds from other dimensions (Like a dimension made from a devil fruit or something like our dimension or maybe a total reversal of themselves listening in on them. One dial would find a dimension that is full of screaming and could use the others dials to locate different areas or "search the dimension" to find other screams or use the third dial for volume. I created the device so my character can find songs from this dimension that we exist in and write about them. Basically, you can find our dimension and play Lady Gaga or Bach or any songs from our dimension)

I got the idea from how some people use radios to communicate with the afterlife (supposedly another dimension)

Guys! I'm not sure, what do you think?

breaking the fourth wall need not be this complex

Yeah, just pretend that music is identical in One Piece to the real world.