I recent bought a Shure SM57 mic because I want to record my guitar/amp setup. I have an old Fender Blues Deville amp, that I have now miced up with the SM57 going into my Focusrite 4th gen audio interface. I am running Ardour 9.5 under Arch Linux and I monitoring everything through my Sennheiser DT 770 Pro headset. Everything is sounding fine when monitoring but when I record something and listen to the playback it is very quiet compared to the monitored signal. What am I missing? FYI the same thing also happens in Audacity, so this is probably not an Ardour issue but I am lost on what to do here. Do need to turn up the the input on the DAW. Any suggestions are welcome, Thanks
Start pavucontrol, go to the “Input Devices” tab and make sure the input volume for your Focusrite is set to 100%
Just checked and it is at 100 %.
What does the waveforms look like in Ardour and Audacity; do they have reasonably large amplitude or are they just tiny squiggles?
If they look OK you probably have to turn up the output volume in pavucontrol.
If the amplitude is small it could be that you have the channel input knob on your Focusrite in Line mode as opposed to Mic mode.
The signal from your microphone is way lower than the one from, say, a synth.
What do you mean with tiny squiggles?
Does it look more like the left part here ( where it fills up most of the vertical space of the track and would indicate that it’s recorded OK but your output volume is set too low) or the right part (which would indicate that the input signal from your Focusrite for some reason is too low) ?

You need to provide a lot more detail about how you have your audio connected and what is the exact monitoring path.
Are you using hardware monitoring through your interface, or software controlled monitoring through ardour?