AudioBanter.com - View Single Post - Difference between newer & older neumann 87's

In article writes:

I picked one up recently. It is an earlyer model, i think 80's. I know
this because it has a power meter and thats what I was told.

The earlier U87 had a compartment for two 22.5V batteries so the mic
could be used without phantom power. That "power meter" is a battery
voltage indicator.

But what
are the other differneces? Whats the "Ai" mean on the new ones?

Ai means it's a newer model, maybe XLR connector, maybe US model.
Newer ones have higher output than the original model.

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