Faint but annoying

[Synsound]

I have just finished an EQD Speaker Cranker and a Naga Viper. With both circuits I have great tone but when the guitar is silent there is an extremely faint but existing high pitch noise in the signal(like the cell ringtones adults shouldn't be able to hear). I Know with higher gain circuits there tends to be a bit more background noise. I'm not sure if I should just accept it as common place or if there is a simple fix.
This isn't a deal breaker for the circuits. I'm mainly curious if it's normal.

[Travis]

Some pedals are just noisy, but it could also be your power supply.

Have you already tried the usual suspects? (extra power filtering and series resistor?)

[rocket88]

it could be the powersupply, might want to build the humulator and see if that fixes it.

[traktop]

Had same problem with my naga viper when playing it alone, but as soon as I threw it into my pedalboard with some buffers before and after, the high pitch was gone.

[Synsound]

Thanks guys
I'll prob tryout the huminator when I get a few moments.