small amp for 2.1 computer audio (svs ultra)


I'm looking for a compact-sized amplificator to use with a 2.1 computer audio system

Speakers = 2 SVS Ultra or 2 LCR-750
Subwoofer = PSB SubSeries 125

The biggest concern is the size restriction, i have limited room available under my desk
- Maximum 12" width
- Maximum 6" height
- Maximum 18" depth
- no fan / totally silent

I am totally noob at this, i never bought an amp before (beside AVR for home theater system).
I don't need any fancy features and the amp will always be connected ONLY to the computer. I don't need airplay or any wireless feature, just an audio input to hook it to my computer. I'm not the kind of guy who play a lot with audio settings and equalizer, most of the time i use default settings (on my HT i just ran audissey and didn't adjust anything)

Any recommendation ?
128x128ungovernable
cleeds,What does he mean with this statement??????

"  Also, i realised i would really prefer an unique button that you turn from left to right to adjust the volume (instead of separate buttons to raise/lower the volume)"
yogiboy,

That statement can be a little confusing, but I don't he is asking for a balance control and this is what he means.

"button that you turn from left to right to adjust the volume" - a knob that you turn clockwise(left to right) to adjust the volume

"instead of separate buttons to raise/lower the volume" - an electronic volume control with + and - buttons

so, he just wants a conventional knob to adjust volume.

tls49,
Thanks for the clarification, the unique button sure confused the crap out of me!
Sorry for the confusion i realise it was unclear, i am noob at this and i don't know the appropriate technical terms. My first language is french so there's also the language barrier.

Indeed, i just want a knob to control the volume. I noticed the suggested amps had volume control, but there was 2 different buttons to control it. I prefer knob as traditional "push buttons"

Windows does have a volume control, but i prefer physical volume control.
My current edifier computer speakers has something like this and i love it: http://img.ncixus.com/images/27404_l.jpg