I haven't ever had a subwoofer in my playback until yesterday. I always kinda thought that my speakers had enough low-end punch for my tastes. until recently, HT hadn't been as much of a priority so i didn't really care about not having chest thumping effects expolosions. well now that i've had the DefTech Supercube 2 in my system for 24 hours, i can say that everything is superior and I'm not even sure i've got the cross-overs dialed in just yet. the HT experience is obviously improved but 2 channel music playback is surprisingly improved in all aspects. it sounds more detailed and the imaging is better. it seems that maybe taking away some of the low-end responsibility from the mains has allowed them to do a better job on the rest of the frequency range (can this be right?). the sub is very quick and musical, not overpowering and nice and tight. it's got plenty of thump if i want it. Now I really can't wait to get my arcam receiver in the next week or so. (then i'll probably have to upgrade my digital front-end, but that can wait).