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Help needed to eliminate unwanted noise from tweeter

Hi all, need your advise to eliminate annoyance "sizzling" noise from speakers' tweeters (close listening range).

I have isolated all the power supply of audio equipment. Then plug in one by one in sequence as following: -

a) Integrated Amplifier - Accuphase E280

b) CD Player - Sony CDP-997 (standby power) - no noise observed from tweeters even my amplifier volume knob is at set to lowest position.

c) DAC - Denafrip Ares II (standby power) - Once I plug in, I could hear the sizzling noise from tweeters when my ear is near speaker.

d) Music streamer - Unplug Ares II, and plug in Eversolo DMP A6, similarly I could hear noise from tweeters.

From the above, could someone pointed me what's wrong with these two (2) units? They are three-prong with ground pin, they are connected to my Novaris Surge Protector multi-gang socket outlet and to wall recepatacle, there's earth/ground continuity.  

Your advise will help me to isolate the 'noise' issue for cleaner auditioning with thanks.

Regards,

Auronthas

auronthas

Showing 1 response by curiousjim

curiousjim's avatar
curiousjim
4,192 posts
 

@auronthas ,

 I doubt very much that the Aries ll is making the noise, but are you using RCA cables from it to your amp? Does their path cross a power cord or anything metal? If so, try using XLR cables. Is anything plugged into a circuit that has LED lights on it and even worse, a circuit that has a dimmer on those LED lights? Another thought (Ow) try to get the mesh out of the system.  You can buy a 100’ Cat8 cable on Amazon for cheap to try for a test.

All the best.

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