How to monitor recording on AR Mk2?

Hello!
I’m trying to use external mic with preamp for sampling but can’t monitor the sound.
SRC is Left In, MON is YES.
What did I miss?

Hm, ok. I can hear the signal from mic only when power of signal is very high.
AR Master Level is MAX
I can hear the signal only when it is higher then middle of meter on the screen.
For example, when power of signal is on middle I can’t hear anything in my speakers:


And only when it is almost on max I can hear myself in my speakers.

Bug or feature?

Hey all I have my opz into a little mixer then into the ext in of the rytm and it boost the volume for sampling perfectly
but
On the audio capture it doesn’t show anything on the inputs only on the mains???
Any help please…