I just purchased the Swan M200MKIII and WOW do they sound amazing, a huge upgrade from my stock computer speakers. Turned a few of my 3 star songs into 4 star songs in iTunes.    I connected the speakers using the RCA to RCA cable so I could control the volume from the speakers itself and...

Someone told me that the RCA out on the e9 does not amplify so I should connect it using the 3.5mm if I want the speakers to be amplified. Is that needed to make the speakers have the best quality sound or would it be better without the amp?