Speakers?

[Subeternal]

The only time you need to worry about quality is with the ultrasonics, and that's only to ensure that there is a sufficient frequency response to support 21kHz.

So just don't use the ultrasonics then, otherwise these ones are good?

That 2.1 speaker set looks nice. Any decent costing 2.1 set will do the trick for masked and ultrasonic. I like Creative so I'd go for it myself.