I am AMAZED at what this sub can do! I just listened to a Velodyne HGS 15, and IMO the PB2+ STOMPS it! I also listened to the big M&K & Klipsch. LOL. Granted, it isn't as pretty. I'll take the best bass I've ever heard over "pretty" ANY DAY. I cannot wait until some magazine reviewer gets his hands on one of these. I'm sure they will be shocked!