This is a SVSubwoofer 20/39PCI. It has an onboard 320 watt Bash amplifier. It also has a 12 inch long throw driver. It is approximately one year old. It is in like new condition and has been taken care of (tuned from day one with Radio Shack SPL meter). My reason for selling is to make room for a new SVS PB12-Plus/2. I am asking $399 plus shipping. It will come in the original SVS shipping crate with manual. I would prefer to sell to someone within the Atlanta area (to avoid shipping costs), but I am willing to ship, at buyers expense.