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  1. 08-05-2008, 08:38 PM #1
    02audionoob
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    Red face Hiss from my Adcom GFP-565

    Can someone help me out by explaining why my Adcom GFP-565 preamp makes a continuous hissing sound play through speakers? It does not appear to be affected by turning the volume up or down. I had a GFP-555 that did the same thing. My Marantz 2325 receiver from the mid 1970's is actually considerably quieter in this respect than the highly-regarded (I think) GFP-565. What's the source of this noise? I know zilch about electronics on the inside...just know how to use them. The hiss never varies and it's the same on each side.
    Last edited by 02audionoob; 08-05-2008 at 08:49 PM.
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