Possible plate amp, available locally

Hi guys, I noticed this on Audio Mart's site, not sure if it could be used with any combination of subwoofer to create an active sub.

https://www.audiomart.co.za/index.php/power-amplifiers-powered-speaker-amplifier-module-c-1_8_493?osCsid=dfa1da697b67727e56c6a225dcff01f6

https://jb-systems.eu/aud/aud-amp/aud-amp-mod