Noise amp on & amp off

[leofam05]

Hi everyone , I have been doing super silent cuts.
Lately i have been away more than a month i when i came back i started having lot of different trouble shootings.
I'm at this point of life that everything i touch it breaks
my computer died , then my needle randomly died (probably cos a bad calibration) , the lid of the top jar got broken and even my one of the voices of my Juno 106 died .
yes all this in a month and a half !

So now I'm having this weird noises amp off and amp on .
My thought is that is a needle noise , so probably i fuck up this needle too , but unfortunately i don't have a replacement now . So just want to have some other opinions
So I'm going straight to the amp with my own IRIIA , passing first from a passive big knob .

here i attach audio samples.
thanks everyone
this forum has been super helpful .

https://soundcloud.com/user-110223296/sets/amp-on-amp-off-noise/s-6MpXGZLIC1u?utm_source=clipboard&utm_medium=text&utm_campaign=social_sharing

[PMST]

Amp on has mains hum, the general noise just sounds like used diamond noise to me. I suppose the issue is how loud it actually is? It's hard to say as you have not said how loud it is, also with or without diamond heat?

[PMST]

I run my lathes from UPS power supplies (APC) and never had any mains or electrical noises or issues since.

[Discomo]

I run my lathes from UPS power supplies (APC) and never had any mains or electrical noises or issues since.

Great tip! Many thanks

[leofam05]

yes i do have my lathe connected to a UPS Eaton Ellipse .
two separated power supplies also for the main unit also.

[PMST]

Try plugging the amp into an extension lead going to another room, see if the noise then goes