Hi all, I just bought this early epic, very nice looking bass. I just wanted to get some info. also I thought epic production started in 1994? top looks like koa or bubinga?

Carlos,
 It is an early Epic model, maybe even the first 5'er. There are a couple listed Here.

Walnut, maybe?
 
http://www.alembicguitars.net/support/reference.html#woodfeat