Part 2
It might looks that both setups are verry different, actually they sound close to each other. Frankly the double more power of the Sony setup ( 2x100W limited of amplifier channels ) makes no big difference except when its used near to its max capacity, gives more physical sensation and a bit more dB. Sound characteristics are similar, actually Creative's subwoofer have a bit of advantage reproducing deeper bass. For some reason i expected a bit more of this Sony setup.
Sony SS-MF550H flor-standing speakers feature one 8 inch HOP Cone bass drive, lots of space inside and they are wooden. There is extra hole for a deeper bass. In audio, size DOES matters There is also 3.25 inch mid-range and 1 inch tweeter. Speaker is coved by transparent protector. Mid-range and high-range reproduction is good, no gaps. Bass aint strong by default but can be boosted through the amplifier with bass-bosty option and equilizer. It then reach good, deep and strong bass with distortion only in peaks of the amplifier. Amplifier allows you to mount two more speakers and extra 200W in total. Extra power catch up for the lack of surround sensation. Setup is good for music, movies and games.
Whats for the Creative?! With its 92W RMS total is about twice lower than the sony. Subwoofer is wooden and bigger than most around. Its featuring 6.5 inch long-trow driver verry well hidden behind the protector. Its just impossible to see through it. Driver is looking on side left and all connectors are at the back. Keep in mind that thios is hell alot of cables - 7 satelites, wired remoute control, power cord, 3x 3.5mm jack to 4x 3.5mm jack and hardware upmix control (5.1->7.1; 6.1->7.1;DIRECT). Infront you will see big dual-flared port which is actually "tube-in-the-tube" going deep inside. Front satelites and center have a tweeter which provides good high-range reproducing. All 7 satelites have about 3 inch wide range driver which do well all long to the max capacity. Bass is deeper than the sony setup but it gets more distorption at pick power. While the sony's amplifier has remoute control, Creative T7900 use wired remoute control by default with overall volume control and subwoofer volume control with headphones and line-in 3.5mm ports. You can get a real remoute control and a wired module with light indicators too (Creative I200). Here is the place to note that sound card has big role thanks to upmix, CMSS-3D (simulates surround incredibly well), Crystalizer (clearing all channels) and good Signal-to-Noise ratio). Something that not much ppl knows is Creative X-Fi use three DSP processors (Digital Signal Processing) that not much companies has. This gives lots of calculation power and dynamic channel processing.