Dynamo's ultimate radius animation ends early for enemies when ability duration items are used.

[jow]

When dynamo uses his ultimate the yellow radius disappears a few seconds before the channel is supposed to end when ability duration extender items are used but this only applies for the opponents. His team mates the animation plays as normal and ends when the channel ends.

 

[Aurum]

its present even without duration stat. Dynamo also has no light melee sounds