I can tell you that even though we are not a dealer, we have worked with these amps a few times in the past. And usually because the owner dumped the last vehicle they were installed in and wanted them moved to their new one-which suggests longevity first of all.

That being said, they absolutely pound. They are power hungry but anyone getting to this level knows their electrical system has to be upgraded (big three, second battery, possible H.O. alternator, etc). The cases are pretty large however and not always the easiest to install while retaining any usable space. I do like the plain style to them. Kinda like JL's slash series. Easy to incorporate the styling into any custom amp rack theme.

They really are good amps all-in-all...