Running BX8s with Behringer UCA 222 Audio Interface and i must say they sound better than Yamaha HS8 which friend is running.A Huge leap by M-Audio in this model. The mid bass the vocals treble is just the way it should be. Super Punchy, I don't require a Sub-woofer for sure.P.s- GET A AUDIO INTERFACE if you want to get the maximum juice out of these. (PC Internal sound card wont do justice to these monitors A BIT)!SUPER SUPER HAPPY !Money WELL SPENT !