[LAU] Record levels lower in Alsa than Jack

Wondering if there's a command line (scriptable) recorder for Jack which will record for a configurable duration. Because: I've been using Jack TimeMachine to record in its default 'w64' format and then converting to wav with sox like: sox --no-clobber -S tm-2020-10-27T22:00:15.w64 -b 16 /home/john/2710.wav It all works well and sox stat shows min and max amplitude -0.9 and 0.9 I need to make the recordings automatic and arecord seems to fit the bill with its ability to record for a number of seconds with -d, but the level seems much lower. I used PulseAudio Volume Control to get something like a good level with 150% on the input sliders (10.53dB) and I still only see around -0.5 and 0.5 using sox stat. They only go up to 11dB. I don't like pushing levels that far and it isn't enough anyway. Something seems very wrong with Pulse / Alsa although Jack uses Driver: alsa. PAVolume Control > Input Devices shows UltraLite AVB Multichannel Port: Multichannel Input Front Left (where the inputs levels are) Front Right " 6 other position channels (showing no input level) 16 Auxiliary channels " -- Thanks again, John.