Purchased NS8900 a month ago,with bill/warranty........these are 300w(max),bass reflex,2 way,bi-wireable/goldplated, MDF+wood finish(found similarly on expensive ones from other co's), they produce good tight bass (not boomy at all) and instruments sound good ...this pair is quite nice in that department, these Speakers from yamaha are made especially for both music as well as movies.....you can purchase, without much worry..........but always remember your own ears are the best judge .....try to get a demo.........