They aren't good anymore. Some, like the sub amp I just sold, used to be pretty good. The one I just sold is early 2000s, made in the USA, and pretty beefy. But I wouldn't generally buy a new Planet Audio amp, no. They got bought out, a quick Google search shows they are now equivalent to Boss Audio, which has always been terrible.
Could I use the Planet Audio AC1500.1M to power a single Rockford P3D410 and not blow it? I know it may not put out the rated power, but if it does can a rockford sub handle extra power? Also, what is a good comparably priced sub that can handle more than its rated power or match with that amp? This may be a duplicate post because I just tried to post with links but a moderator has to approve it...