Thanks Tardcore for your help,
I own a MacBook Air mid 2013 (Sierra), and it' s a shared input/output, when i go to the sound setting i do have the input and output tab,
but nothing is detected when i plug my 1/8" , it just say 'headphone' detected (i bought a microphone with the 3 ring adaptor but nothing too...) on the output, but nothing detected on the input...
anyway i'm thinking that i might get a RCA to USB device like the BEHRINGER U-PHONO UFO202,
Some feedback says that the sound quality improve much more than a simple 1/8",
If you guys know about this, please let me know your experience with a device like this type,
Thanks !
Guillaume