the finisher
1000+ Head-Fier
I tried this on a different circuit and got more and different pitch buzz. Almost all my testing is just with the power cable and headphones connected. No difference with the power cable as far away as possible. Just when I put the power cord within about an inch of the enclosure.
Mine has a black case but isn't new. It has the balanced dac.
Sorry for your trouble brother.
Okay I have tried several things to try and get outside noise into the system though the Jot.
First I'm testing these things as is, I am not changing my system at all for this test.
I have a dedicated 20 amp, isolated ground, I wired to the box with 10/3 just for my audio gear.
It goes through a commercial 20 amp surge protector that has EMI/RF filtering. Yggy, and Jotunheim get further help with a Emotiva DC offset filter.
I run a totally balanced system from DAC to HP's and speakers, except for my sub's which run off the single ended preouts. I use well shielded cables throughout.
With the digital source active but muted, as not to destroy things here. Balance in only, I maxed out the volume, high gain always for me.
I laid my cell phone on the Jot, nothing. I plugged it into my PC 's charging dock, laid it on the Jot, nothing.
So I got my older gaming laptop, surly this thing will be heard, nothing.
I turned the monitor so I could set this large laptop on the Jot with everything wide open, including the laptop running prime95, nothing.
So surely the SMPS brick for this thing would trip up my now magical Jotunheim, no, nothing. Totally silent.
It's a 120vac to 16.5vdc@ 7 amps, transforming/switching power supply, it should be noisy as hell.
I won't put it anywhere near Yggy, which is touchy about such things.
So right now music is playing nice and clean with this running power supply sitting on top of my magical Jot.
I will try to see if I can trip it up somehow, I wouldn't hold my breath though.
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