amixer scontrols:
Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'Headphone',1
Simple mixer control 'PCM',0
Simple mixer control 'Mic Jack Mode',0
Simple mixer control 'Mic Mixer',0
Simple mixer control 'IEC958',0
Simple mixer control 'Capture',0
Simple mixer control 'Capture',1
Simple mixer control 'Amp',0
Simple mixer control 'DAC Mixer',0
Simple mixer control 'Digital Input Source',0
Simple mixer control 'Digital Input Source',1
Simple mixer control 'PC Beep',0
Simple mixer control 'Speaker',0
Here is data a Studio XPS 13:
amixer scontrols:
Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'Headphone',1
Simple mixer control 'PCM',0
Simple mixer control 'Mic Jack Mode',0
Simple mixer control 'Mic Mixer',0
Simple mixer control 'IEC958',0
Simple mixer control 'Capture',0
Simple mixer control 'Capture',1
Simple mixer control 'Amp',0
Simple mixer control 'DAC Mixer',0
Simple mixer control 'Digital Input Source',0
Simple mixer control 'Digital Input Source',1
Simple mixer control 'PC Beep',0
Simple mixer control 'Speaker',0