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Stumped for a reason as to why I'm getting a hiss from both channels of my CD player, heard when you put your ear to the tweeter.Happens with some discs and not others and can be heard while music is playing at very low volume with ear to tweeter.
Some CDs don't cause this hiss.
Hiss also continues for 10 to 20 seconds after music is stopped then dissapears. Doesn't change in volume with volume control of CD player. Thought it may be the tubes of the CD but this would happen all the time one presumes and with all discs. Could it be a capacitor? but it's both channels and not all discs.
I'm stumped, maybe I should forget about it and wait for something to 'go' then I'd know what it was.
I was hoping this would stop when I had the new transport installed but it didn't. By the way it's an Audio Aero Prestige player.
Any ideas out there before I send it back to AA which I'm reluctant to do as it will take ages.
Thanks in advance for your help guys.
Follow Ups:
Is there a pattern with the CDs that do create hiss? For example, if the CD is older material, the master recording may have been made on an analog recorder. While many of these recordings have been digitally remastered to remove some of the hiss, there will probably still be some hiss at some level present in the CD.If all the hissing CDs are classics from the 70's and before you may have found the issue. If hiss is present on recently recorded material then you'll have to look elsewhere.
If there is no pattern from the age of the material, you'll probably want to start checking for a misconfiguration or faulty component somewhere in the system.
My Lector 0.6T CDP does the same thing. It sounds a bit like low level tape hiss on an analog recording. You can hear the hiss only when the player is in Play mode, not Pause or Stop. The Lector has a relay switch that you can hear click when Play is selected which I imagine switches in the tubed output circuit. Changing to a new set of tubes the hiss remained when on Play. I don't experience the same hiss when the Lector is used as a transport with a DAC.My Audio Note CD2, which also has a tube output, has no hiss when playing and is obviously a different circuit design.
In your case it comes down to how bothersome the hiss is in the context of of your listening experience. For me it is relatively minor, but in absolute terms it does contribute to the noise floor. Perhaps those more knowledgeable than myself can shed more light on the situation.
That's a good description of what is happening but why do some discs cause this and others not.
eg. Keith Jarrett The Melody at night does
Shawn Colvin, These four walls doesn't.You are right, I should try to ignore it as I can't hear it from the listening chair, but it shouldn't be there and when the player was new it wasn't there.
Thanks for the replies guys
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