Hi, I have macbook pro 2020 (m1). My soundcard is Focusrite 3gen 2i2 Scarlet with 2 inputs. The problem is an Audacity record only first input, but second input is doesn’t work. BTW, the program Voice Memos to record both inputs. How can I fix it?
Both the Mac and Audacity have to be set to record stereo. Are they?
Do you use Zoom, Skype, or other chat programs? Those settings can interfere with Audacity recording. Never leave those programs running in the background and restart the Mac if you think there may be interference.
What are the two sound sources? Two microphones? Can you make both knobs turn green?
Koz
What are the two sound sources? Two microphones? Can you make both knobs turn green?
Two microphones plug in Focusrite, but I recording only one microphone at time in mono. 48v power is on and a Focusrite react on my voice. I don’t use any chat programs. The first input is works and an Audacity record this input fine, but the source from second input (when a first input turn off) doesn’t works in an Audacity.
If I unplug a microphone from second input and plug it to first input, the Audacity record this microphone fine.
The Voice Memo program record fine both inputs (separately).
Oh, this is my fault. In an Audacity I chooses a 1 Mono recording Channel and it recording only one first input, because each inputs are mono 
And of course only one input (first is left input) works. When I set in an Audacity 2 (Stereo) Recording Channel both input are works. Thanks for your advice.