26-Sep-2018, 15:56
My logic for why it is not the incoming mains is as follows.
I have dual mono plugged into the same double socket, they are affected independently, where as the mains voltage must be the same going into both.
It happens a lot with specific SAM settings, but not with other settings.
I have monitored my mains, and they were fine when it happend.
It's worse when I play loud and with deep bass music.
It's not my amps, they leant me a 440 to try, it happend within a few mins of powering on with my 'bad SAM' settings.
All of the above tells me it's some sort of firmware / maths / DSP issue, something is being too clever internally.
If they tell you it's your mains again challenge them to provide a mains conditioner or voltage logger for your mains to prove it, it would be useful diagnostics for them.
If you are using SAM change it's % setting 1% and see if it gets better or worse.
This feels like a rounding error bug to me, so any tiny change in SAM % will change the calculation.
I have dual mono plugged into the same double socket, they are affected independently, where as the mains voltage must be the same going into both.
It happens a lot with specific SAM settings, but not with other settings.
I have monitored my mains, and they were fine when it happend.
It's worse when I play loud and with deep bass music.
It's not my amps, they leant me a 440 to try, it happend within a few mins of powering on with my 'bad SAM' settings.
All of the above tells me it's some sort of firmware / maths / DSP issue, something is being too clever internally.
If they tell you it's your mains again challenge them to provide a mains conditioner or voltage logger for your mains to prove it, it would be useful diagnostics for them.
If you are using SAM change it's % setting 1% and see if it gets better or worse.
This feels like a rounding error bug to me, so any tiny change in SAM % will change the calculation.
Roon, Rega P9 + Dynavector XX2Mk2 > 440 Pro > Sonus Faber Guarneri Evolution