Micro used to singing, violin, acoustic guitar
I find it quite versatile.

OVERALL OPINION

Used for over 5 years
At the time, there was no equivalent, especially in light of the suspension comes with (in neumann they sold the suspension at the same price in all AKG)
I used some other mics in studios, mainly neumann.
The quality / price ratio seemed exceptional, but in the meantime I guess things have progressed.

In the studio we made measurements to compare it to a Neumann U87. Some speak of heresy ...
Level neutrality: the AKG has, as many have said before, a lump in the upper. A characteristic of AKG looks like (I have a pair of 451 that have roughly the same answer). Otherwise, it's an almost absolute flatness!
Neumann is very flat. No surprise then!
S / N ratio: neumann advantage, of course.

Then we did a blind test, by adjusting the equalizer for the two are comparable.
Surprise ... We had a hard time distinguishing between the two ...
Really wrong.
So, I do not really understand the comments about the "cardboard". It must be said that has used pop filter for testing
Still, the signal / noise ratio is very critical, and condemns the microphone for studio use to me.

At the time, the only competitor was the Rode NT1, really worse. Today, I do not know the state of the art market.

EDIT: I offered an AKG C214. And I realized the gap between a micro really mid-range to high-end microphone.
It's a choice I would do it today, although I do not regret the IEA at the time.