This listing is for Onkyo Home Theatre Surround Sound 5 Speakers and 1 Massive 20” Powered Active Subwoofer. The powered subwoofer model is SKW-750 has 140W and 10”. This is a very large powerful great sounding sub. Measures 20” tall 11” wide and 17” depth. The foam insert is in great shape. Has these modern cone shape feet on the bottom of the sub. Comes with 5 speakers very large speakers also which measure 14” tall and 5.5” wide. Has center, front left and right, and surround left and right and those 2 speakers have the brackets to hang on the wall to give you that home theatre experience. This system when hooked up with a receiver is a loud powerful and crisp sounding. Overall this is in good shape has some light minor marks on some but overall good shape. System was rarely used.