It’s hard to say goodbye to another weekend. Maybe you just need a little bass to kick you in the pants and into Monday. Of course, this is assuming that you have a decent subwoofer.

If not, Buy.com is kicking off the week with the perfect discount. The online retailer has the Energy ESW-M6 Subwoofer on sale for just $199.99. This is $400 off the list price, and also includes free shipping.

The 8-inch cube can put power into your movies, music or even daily TV watching. It promises up to 800 watts of room-filling, rump-shaking bass—all in the smallest chassis that Energy currently sells. Inside the high-gloss black enclosure, the unit has a 6-inch anodized aluminum cone woofer, two 6-inch passive radiators, and a built-in amp.

In case you’re wondering why this sub is so cheap, the ESW-M6 is a discontinued model. That said, it’s still a great sub! The low price just means that Buy.com may be looking to clean house a bit. We’re not sure if they will offer this price until stock is gone or what. It’s definitely a good deal, though, so don’t wait!