I think the more robot sounding voice is Ultron MK1 when he comes out of the Avengers Tower elevator, and the deep, crisp, digital sounding one in this and the "There are no strings on me..." line are Ultron Prime.
Ah. OK. Thanks. I have no idea what the difference is but i am stoked to find out
Ultron MK1 is like an old laptop you would only use Word on, and Ultron Prime is like a homicidal Mac you could edit 5 feature length movies on at once. An upgraded Ultron has a sexier voice too.
“Don’t kill if you can wound, don’t wound if you can subdue, don’t subdue if you can pacify, and don’t raise your hand at all until you’ve extended it.”