Dan´s Data has posted a review on Juster´s SP-691 speakers. Here a clip:

Apart from the odd power supply arrangement, these speakers are quite unremarkable. As you´d expect, for the money.

They´re magnetically shielded, so you can use them right next to a monitor without distorting the image.

There´s a headphone jack on the front of the speaker with the amp hardware in it, so you don´t have to fish around behind your PC if you want to personalise your audio. Plug something into the headphone jack and you mute the speakers, as you´d expect.

Check it out