Can anyone identify this fixture?

[Sheets]

It's from Pearl Jam's new rig. They move them up and down throughout the show.

 

[wheat]

Most probably it's a simple custom LED array...

It's pretty easy to build one with off the shelf power supplies and they do really work fine, otherwise there are a number of producers selling PSUs to be used with many different led bars...

 

[JohnD]

I also vote for custom fixture although this item looks similar:
Scenex 50cm Diameter LED Ball RGB | eBay

 

[ship]

I didn't make them, though will have been a fun project and can only imagine the R&D that went into it. Nice work

 

[Traitor800]

They are in fact custom, they were made by the automated rigging vendor for the show, Tait Towers.