I am using the Arc. 2 804s and a 2000.1. The 804s have similar output to the Jl xD`s I had before. The 2k I cant really comment on too much because I don`t have the electrical system to really back it up. I took a pic of one of the 804s next to a can of coke as a size reference:
Stereo, 4 ohms: 4 x 75 Watts Plus 1 x 225 Watts Stereo, 2 ohms: 4 x 100 Watts Plus 1 x 350 Watts Bridged, 4 ohms: 2 x 210 Watts Plus 1 x 350 Watts T.H.D. + Noise: <0.06% @ 4 ohms S/N Ratio: 90dBs.
-Class-D bridgeable 12V amplifier -5/3 channel bridgeable 12V amplifier -Stable into 4 ohms bridged or 2 ohms stereo load -PWM MOSFET power supply -18dB octave crossover slope -Variable FULL / LP / HP Electronic Crossover -Variable bass boost -Variable sub sonic filter -RCA Signal input and output connectors -4-way protection circuitry -thermal / over current / speaker short / DC -Tested voltage & THD: 14.4V & less than 0.05% -Dimensions in Inches : 6.7(W) x 2.2(H) x 10.5(L)
sound digital uses nano technology amps get small as youre wallet size i remember the dealer for sound digital "vinai" brought one in school and it was literally the size of ur wallet and it packs a good punch too ..
check out the polk audio, precision power phantom, nvx, hertz hdp amps, all have same internal board as arc audio and soundstream (tarantula nano not picasso nano), all similar specs and size. I think the hertz hdp has the most rms output.
Crossfire is 1 of the best in those small amp range , recently got some info on auidopipe as well , they seem to have gone up in quality as well ,and got pretty small to , 1 of the cheapest amps out here , check those ,as well as lightning auido , am using the 1000md , works like a charm