Hi, I just purchased the L1 Compact 1 month ago and am really enjoying the new system. However, I've been noticing a faint hiss when whenever the L1 is turned on. I normally have the volume dial at the 12 o'clock and the hiss is noticeble when close to the speaker. When I really push the volume, to say 3 o'clock, the hissing gets even louder. The hiss occurs even when nothing is plugged in to the speaker. This is not usually a problem for loud music, but for quiet passages its not so good.
Has anyone else encountered this before? It this 'floor' noise normal for the L1 Compact?