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High Frequency Static in single channel - MA352 & MA352

So I've got a newer setup, brand new SabrinaX, MA352, Transparent interconnect, and PowerBank6, Eversolo A6, and am experiencing a high frequency, almost digital sound in only the right channel. Noise sounds exactly like the Computer Noise on this reference page. The sound persists even after swapping the Amp, switching and cross checking speaker cables and with nothing on chain. Literally just the Mac plugged in, speakers connected, power on the amp and the sound starts. Hum in the right channel, silent in the left, can take the right terminal speaker cable and move to left speaker and sound follows.

Also of note, have Ferrite chokes on the RCA's, Power cable, and the Power of the Eversolo just in case. 

Not crazy loud at all but ear next to the tweeter and if at night definitely audible in the listening position. So just wondering if anyone has experienced such an issue.

rpnyc
rpnyc OP
8 posts
 

Yeah that was my first inclination, but this is the 2ND brand new Macintosh amplifier and found out this is now their most popular product so fairly certain it's not a design flaw.

I have disconnected all things plugged in and tested, and still persists. I'm wondering if maybe my room and the combination of the Tube preamp (built-in) is picking up something.

erik_squires
17,544 posts
 

Well, I've laid out a couple of things to try.  If you have another building you can try the amp in that can help too. 

arnieco
21 posts
 

Ground look hum occurs when ground and signal path share same wire. Guessing your computer is not on a 3 wire ground. I would suggest adding a wire from the chassis screw of the PC, to a known ground (center screw on wall outlet, or use a 3 wire prong plug, attach ground wire to ground pin, and plug it in

arnieco
21 posts
 

Ground look hum occurs when ground and signal path share same wire. Guessing your computer is not on a 3 wire ground. I would suggest adding a wire from the chassis screw of the PC, to a known ground (center screw on wall outlet, or use a 3 wire prong plug, attach ground wire to ground pin, and plug it in

arnieco
21 posts
 

Ground look hum occurs when ground and signal path share same wire. Guessing your computer is not on a 3 wire ground. I would suggest adding a wire from the chassis screw of the PC, to a known ground (center screw on wall outlet, or use a 3 wire prong plug, attach ground wire to ground pin, and plug it in

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