Hello team ! I have two audio sound card on my Mac which have exactly the same names: [AVFoundation indev @ 0x7fd3fca04dc0] AVFoundation audio devices: [AVFoundation indev @ 0x7fd3fca04dc0] [0] MacBook Pro Microphone [AVFoundation indev @ 0x7fd3fca04dc0] [1] Hue Sync Audio [AVFoundation indev @ 0x7fd3fca04dc0] [2] USB Audio Device [AVFoundation indev @ 0x7fd3fca04dc0] [3] USB Audio Device I can record on one of those using the following command: sox -t coreaudio "USB Audio Device" toto.wav -V6 But I have no idea how to tell sox to go and record on the second input which has the same name. Any suggestions? *Alexandre Grais - kapptivate* *Website: http://www.kapptivate.com * *Email: alexandre.grais@kapptivate.com * *Phone: +33 7 89 80 03 56* *Skype: alexandre.grais*