hi,
i would like to share what i noticed about the equipment installed in gill's car. this only my opinion so please dont say you are talking out of your @$2.
the jbl amplifier is not as smooth as a pi944 which i have. im not comparing my amp to gills amp, its a comparison of pio and jbl amp. no offense meant to any one.
i felt, the jbl amp is a little overrated in power output. so i dont believe what the specs say. it would be same or a little higher than a 944. i will compare my 944 with the 75.4 when i meet gill again or if i can find one in my city.
i didnt quite like the build quality of this amp. particularly, the printing of legends. it didnt feel right to me. dont know but maybe its the ink that is used or something else.
the worst part of this amp is however the power input terminals, where you screw the power wire to the amp. its just too small. its the size of the speaker inputs. you cant use a crimped terminations(plugs?) on the power cable. gill used an 8 gauge cable and it fit properly but i doubt a 4g cable would fit in properly. this is also 1 reason why i think the amp is overrated. considering the power it pumps out, a speaker sized terminal is too small IMHO.
im using a 25mm cable on my 944 amp and fits in good. it can even take in a bigger wire i guess.
maybe, this is the reason why it is cheaper than other comparable and lesser amps. if it isn't underrated then this definitely is cost cutting.
The best thing in this amp is the gain and filter adjustments are on top. its a breeze to setup the gains which can take a phillips heads(the + one) screw driver. i hate the flat head screwdriver because it slips.
i dont mind the stereo mono switch on the side panel but it could have been on top with the other adjustments. but you dont need to switch from stereo to mono or vice versa often so its ok there.
i really liked the kenwood HU. leaving aside the preouts, the sound was excellent. the treble particularly was sounding perfect. if im not wrong, it had both front and rear hpf which i think is good for a person who likes to listen to all the speakers. it took its own time to read the cds though but its not too slow.
so this is all IMHO. no offense meant to anyone.

i hope what i have written makes sense.
the overall sq of the setup is great and i would recommend the equipment used.
cheers
clip