The e902 is a kick drum and bass amp mic. You could also use it for any other low frequency rich sources and likely have good results. I have also used this as one of two mics on a cello, and got a really great sound for a very sparse mix. The mic's frequency response definitely seems to be made to accent a kick drum. The transient on this large diaphragm dynamic mic is surprisingly fast, which is great news for drums, because you can get a deep, beefy sound without sacrificing punch. I also once strapped this to a small diaphragm condenser and used the combo on a floor tom, with very nice results. You'll have to phase align the resulting signals, but it's a great way to get a crisp top end with a huge bottom on a floor tom. The low-end on this mic is definitely hyped, but it tends to not be a problem because most people are going to EQ boost the same area anyway, so this just means you'll have to boost a little less later on in the process.
There are a lot of kick mics out there, and this one definitely holds its own even though it's a lesser known competitor. This is at about the same price point as the AKG D112
, and I will say that I do think the AKG is a better mic overall, even though you will find some situations for which this Sennheiser can do a better job. If it's your first kick mic, I would say spend the extra $50 on a D112, but if you are just expanding your selection then you definitely won't really be disappointed with this mic. All around a pretty solid kick and bass mic. I recommend it.