Good Sub? Bad Sub? Hmmm... Rockville Rock Shaker 12

This may be a half decent sub, but only due to it’s surprisingly competent wiring options (check picture of amp). Anyone think this is enough to consider it at least passable to include any bass at all where there simply isn’t any, especially in janky/proprietary/cheapo setups? With a cheap power cord upgrade, it seems it may just be.

AmazonSmile: Rockville Rock Shaker 12" Inch Black 800w Powered Home Theater Subwoofer Sub: Electronics