I use the Beyerdynamic MKV 87 when recording bands in different places, they reduce the need of many stands and work just as fine. I use them mainly with a t bone DC 4000 kit but actually I used them also with some other mics like SM57 and they work as well with those.
The springs that they come with are very powerful and makes me thing they won't stop working easily, so I suppose them to last a few years.
They fit just as they are intended in snares and toms and will keep in place even when there is a huge amount of movement going on for example in toms.
Nothing bad to say of them at all, maybe that they wont fit in weird snare rims or the like, but I've yet to find myself in such a dilemma.
I don't like mic stands everywhere around the drums, so these are perfect to clean up the floor. I looked for mic clips that I could use with my custom made wood hoops but I found nothing until I noticed these. They work great with my AKG tom mics - they are positioned nicely over the drum and not too far into my crazy wide hitting radius. :)
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