Someone else will post a more useful reply, but:
1. Even out the sound and some will describe it as almost adding more punch. I find this to be true and I use a EBS Multicomp with fairly subtle settings.
2. Not everyone uses one, but I'd say a fairly high percentage of funk and pop players. I'd also say that nearly all modern studio recordings of bass have compression added on at somepoint.
3. EBS Multicomp and the Demeter Compulator are highly recommended on TB.
4. You're welcome
