FInally I have a noise issue

Its a common fault with components that have any type of "isolated" power supply, like...

battery powered components like tablets, phones etc..

• CD/DVD players with 2 pin power supplies
• (Some) Bluiesound products
• many other products like the bluesound

Yesterday it was the iPad with the only cord being the earphone.

Last night I noticed I also had the higher frequency noise coming in on the TV input.

This morning I disconnected the USB connecting the RME DAC (ADC) to the computer and the noise went away on all sources.

Next I’ll try and free up a place to plug the laptop into the same strip as the stereo gear.

Sort of defeats the purpose of a 24 bit ADC, when the noise floor is toggling over half of the bits.

Thanks @williewonka 

Word @adambennette and @clearthinker 

I always ply the iPod without charging, mostly because the one hole cannot do charge and plat at the same time.

The DAC/ADC was a surprise though.

I can see why I like vinyl… this digital stuff if difficult.

@clearthinker I abide the vinyl fine.
This ADC (and an 8 channel DAC) is my first real foray into digital gear… and the ADC is specifically for measuring the TT stuff. 😋

Maybe it is the source?

It was the USB connecting the DAC to the computer that was the source of the hash/noise.
And it appeared on all sources as a ground loop type of input..