i just bought the BMAF 4000/D. sounds bad *** but not as loud as some hifonics 1600 ive heard. and Linkz is right, they ARE over rated. might be correct rating with 16 volts, but that isnt what the avg. car is putting out. it also does run warm, but def. not hot.
also, always keep in mind this formula: for every 1000watt RMS, the amp's fuses should total 90-100 amps. my BMAF comes with 120 amps for its fuse, indicating that the rms would only really be around 1200-1300 watts.
the hifonics bxi1608 has a total of 160 amps for its fuse... go figure its true rms from there //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
i only bought it cuz i didnt want to spend over $200 for an amp, and i got mine for $170. overall ild have to agree with everyone else, they are a great budget amp