Monster SoundStage MSP SSTG S1 MINI WW User's Manual And Warranty page 6

Toslink Optical Digital
If you have source devices that provide a digital output,
Monster® Soundstage™ has an input for that.
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3.5mm Input
This allows you to directly connect any source you choose
with a stereo 3.5mm stereo jack. (A music player. A laptop
or desktop etc.) The source will be heard from any Monster®
Soundstage™ speaker system(s) you choose.
4) Control
You can control your Monster® Soundstage™ using the
buttons and LED's on the Monster® Soundstage™ itself.
Or you can control it from your Monster® Soundstage™ App
which offers extra features like grouping speakers and more.