I know, another "why I love SVS" thread! But this is from a different angle than most. I got my PB12-Ultra/2 last October. Have been loving it ever since. Especially the 11 to 40 Hz +/- 2 Hz freq response I've measured in my room. (Above 40 Hz for me, room nodes start to intrude.) Maybe 4 months or so ago, during watching Attack of the Clones in anticipation of seeing Revenge of the Jedi , I noticed the sub cutting out. I started emailing SVS and Tom, and I/we quickly determined that at that time, if I changed from a switched outlet powering up the sub, to an unswitched outlet (and auto mode), the problem went away. So I didn't worry about it. After a short time later, it came back, but then I noticed that after "warming up", it was fine again. Here's what it sounded like: mmmmmmmmmmmmm-thp mmmmmmmm-thp mmmmmmmmmmmmmmmmmmmmmmmmm-thp Well, it started doing it very consistently about 2 weeks ago. Based on Tom's suggestions, I did some troubleshooting, and we quuckly determined it was indeed the sub. (Eliminated the cable, and the pre/pro's output.) Bam, the next day he had a replacement amplifier enroute to me. I have to be honest, it took me a year to get up the nerve to get this sub, mostly because I was worried about being able to ever sell it again, how to ship it to someone else? And what if something goes wrong, how do I get it fixed? (Now that I've had it for a while, it ain't going nowhere!) So I got the amp Fri night, installed it yesterday, and I'm a happy camper again. A few things I noticed when I installed it: SVS uses a "retention band" (basically one of the plastic zip connectors) to hold the longest wire to the enclosure. They say it reduces/eliminates that wire resonating inside the sub during operation. Cool! Now *that* is attention to detail. Also, to replace the amp, you have to take the two drivers out, and I was surprise by how (ahem) beautiful they are. Kind of a shame they are hidden underneath the way that they are. Heavy suckers too. Anyway, just wanted to let y'all know that SVS is as professional and courteous and helpful after the sale as before it. And I know from personal experience that not all sub-makers are that way.