Hello... Line level IS audio and RCA jacks is typical to all component equipment... did you notice there was no text stating "speaker impedance" or 'output wattage" this would be a typical warning for a Speaker output... also physical bare wire hookups.
But there is also digital optical output for a receiver/input too... typically S/PDIF cable,
https/en.wikipedia.org/wiki/S/PDIF
You could hook this unit up to Amplified Speakers, but Volume control will be on the back of your speakers... thus a Receiver makes the best connect/Home option.