Hi, I've just bought a Paramount Pictures HCS 5300D receiver/decoder package but there is an annoying hum and slight hiss comming from all speakers including the sub. It doesn't make any difference what input source or volume I use. If theres no signal from my DVD or the volume is at 0 then there is no noise at all. But if the volume is set to 1 or more then the hum and hiss kicks in. It doesn't change with volume and is always the same, annoying in quiet parts of films. Its still there if I disconnect all inputs and just listening to the test signal. Its very noticable at night because I set the volume low and the hum competes and can mask quiet sounds. I guess I want to find out if anyone with this decoder has noticed the same, or if this can be expected by design to some extent since it is an entry level system. Thanks for you help, Chris.