Its the 1532D not the 12. I have it running @ 1 ohm off the OPTI2000D and I'm loving it ...I havent seen much Lanzar products since I've been living in Canada (and alot of people havent even heard of Lanzar) but when I lived in the Caribbean, I worked for a Lanzar dealer so I know what certain lines/series of products are capable of...I'm running Heritage series 5.25" components in the front and Heritage 6x9 3ways in the rear...I'm just taking it slow to break-in the sub (I dont want to damage it)...