Bose Companion 50 to MITV4A Pro via 3.5mm Jack

[backisnickel]

Have some questions about connecting my Bose Companion 50 to my MI TV 4A Pro using a 3.5mm jack. Can you suggest the best option to get good spiny output, An Audio Dac, 3.5mm to S/PDif , 3.5mm to Stereo or bluetooth transmitter etc ...