$ amixer scontrols
Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'PCM',0
Simple mixer control 'Front',0
Simple mixer control 'Front Mic',0
Simple mixer control 'Front Mic Boost',0
Simple mixer control 'Surround',0
Simple mixer control 'Center',0
Simple mixer control 'LFE',0
Simple mixer control 'Side',0
Simple mixer control 'Line',0
Simple mixer control 'IEC958',0
Simple mixer control 'IEC958 Default PCM',0
Simple mixer control 'Capture',0
Simple mixer control 'Capture',1
Simple mixer control 'Capture',2
Simple mixer control 'Auto-Mute Mode',0
Simple mixer control 'Digital',0
Simple mixer control 'Input Source',0
Simple mixer control 'Input Source',1
Simple mixer control 'Input Source',2
Simple mixer control 'Rear Mic',0
Simple mixer control 'Rear Mic Boost',0
eightvirtues@eightvirtues-desktop:~$
$ amixer scontrols eightvirtues- desktop: ~$
Simple mixer control 'Master',0
Simple mixer control 'Headphone',0
Simple mixer control 'PCM',0
Simple mixer control 'Front',0
Simple mixer control 'Front Mic',0
Simple mixer control 'Front Mic Boost',0
Simple mixer control 'Surround',0
Simple mixer control 'Center',0
Simple mixer control 'LFE',0
Simple mixer control 'Side',0
Simple mixer control 'Line',0
Simple mixer control 'IEC958',0
Simple mixer control 'IEC958 Default PCM',0
Simple mixer control 'Capture',0
Simple mixer control 'Capture',1
Simple mixer control 'Capture',2
Simple mixer control 'Auto-Mute Mode',0
Simple mixer control 'Digital',0
Simple mixer control 'Input Source',0
Simple mixer control 'Input Source',1
Simple mixer control 'Input Source',2
Simple mixer control 'Rear Mic',0
Simple mixer control 'Rear Mic Boost',0
eightvirtues@