I have a SVS 25-31CS Subwoofer with parts express amp (the one SVS recommended to me since I wanted something cheaper than the sampson amp). This sub was retuned to 22 Hz and the SVS guy I dealt with said I got the upgraded driver. Sub is about a year old with medium usage and I never really turned it up because I had bass shakers as well. Im going for something smaller in my room (probably a PB-10). Since space is starting to become a liability in my theater room. Asking $350 for sub+amp+cables locally.... I might consider shipping but Im not sure if I have the orig packaging. Still a great way to get into the SVS market w/o breaking the bank. I am in College Station, TX. About 1.5 hrs north of Houston, 1.5 hrs east of Austin, 3 hrs east of San Antonio and 3 hrs south of Dallas. If you live rather far away we might be able to work out some kind of meet halfway between.