I had a chance this weekend, in between my 70 hour work week to play around with my sub for a little bit. I turned the gain to about 1pm and turned the volume on my Denon 3808 to about -25 or -20 not exactly sure. I will tell you this much. That supercube definately did a good job with music. I was impressed. it feeled my house with bass. my house is under 1500 square foot. it was extremely nice. The best part is the bass was extremely clean. I have a velodyne in the same room hooked up as well and you can hear the distortion in it. i have it turned off for not because its not clean sounding like the supercube 1. The money that i paid, and lets say about half of retail price, under 700 bucks, i definately think its was worth its money.
The only thing i have been thinking about lately is getting another supercube 1 for the other side of the room, i would like to have 2 of them.