Bought this amplifier two years ago it sat I started to install my subs and decided to order the 6000.1d . The tested clean power on Williston auto on YouTube was 1800 rms clean 2200rms at clipping and 3600 dynamic ... My woofers are upgraded level 4 DC audio they will handle a clean 2000 rms each so the 6000.1 is a better match with more head room for clean power . Only mocked up for behind seat install $150 no shipping Colorado only unless you're picking up .