what abou the second?

if i raise the gain more than 12 this annoying noise is recorded and if i raise the volume of the recorded track it's even more audible

hello, thanks for the answer

ANALOG1

- without any condenser mic connected i read at 0db gain --> from -97.5 to -100
- without any condenser mic connected i read at 60db gain --> from -68 to -60

- with a condenser mic connected i read at 0db gain --> from -90 to -97
- with a condenser mic connected i read at 60db gain --> from -37 to -47

The mic is a brand new Oktava MK319

ANALOG2

- without any guitar connected and Inst off i read at 0db gain --> from -97.5 to -100
- without any guitar connected and Inst off i read at 60db gain --> from -55 to -60

- with any guitar connected and Inst on i read at 9db gain (i can't set 0) --> from -89 to -95
  turning all the way down the guitar volume does affect about -3 db.
- with any guitar connected and Inst on i read at 60db gain --> from -40 to -45
  turning all the way down the guitar volume does affect about -5db.

I tried with 3 different guitars all brand new and expansive
1) Fender stratocaster American Standar (single coils)
2) ESP Horizon Fr (EMG's active pickups)
3) Acoustic Takamine EF261SAN

Always the same result (about)
Do you think my babyface is ok?
Thank you
kind regards
Giò