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G-K MB500 question.

Wondering if anyone knows anything about these differences.

Which one is newer?

The left has a space / right doesn't?
Screen Shot 2019-08-05 at 1.03.37 PM.png
Screen Shot 2019-08-05 at 1.04.38 PM.png


black top screws / silver top screws?
Screen Shot 2019-08-05 at 1.03.54 PM.png
Screen Shot 2019-08-05 at 1.05.02 PM.png


Speakon's protruding vs flush?
Screen Shot 2019-08-05 at 1.04.06 PM.png
Screen Shot 2019-08-05 at 1.04.51 PM.png


Thanks!