I have a PSE Studio II power amp that I bought used on ebay. When I first took it out of the shipping box, I was impressed with its sturdy feet... I'm not a hockey fan, but when I turned the chassis upside down and saw the Philadelphia Flyers logo on the bottom of one of the feet, that made it pretty clear I was staring at hockey pucks. I can't say much about how they affect sound quality, but they do provide a solid base. I use the amp to drive the passive subwoofer in my home theatre system. The amp, which is a nice looking unit with oak side panels, sits on top of the equipment rack. Probably only hockey fan would recognize the feet as pucks.