Due to having ancient, ungrounded circuitry, I found it necessary to go against protocol and plug my integrated amp into a line conditioner. When I turn the volume knob on my entry level amp (Cambridge Audio CXA-81) through my equally entry level speakers (Revel Concerto2 M-16's) well past 3 O'clock, I get no hiss. Even on the line input attached to an entry level phono preamp, I get no hiss and only faint hum well past 5 O'clock. Could you be experiencing RF or EMI issues? The last time I experienced hiss through any tweeters was when I using a well worn Rotel preamp.
Very faint hiss from tweeter
I just put a new system together and noticed that when no music is playing, if I put my ear very close to the tweeter on either speaker, there is a very faint hiss sound. Is this indicative of a problem? Its not audible unless my ear is very close to the tweeter, but I wonder if its polluting amplified sound when I play music. Should a system be stone cold silent when powered on with no music playing?
Heres my stack:
Focal Aria 936
Parasound A23+
Schiit Freya+
Bluesound Node X