A:AnswerEasily. I added to my Bose speakers and sub woofer with one connection. You have to tell the setup which sound output you are using. I used a straight 1/8” sound cable..
A:AnswerAmazon has them. Enter "Power cord replacement insignia TV" in the Amazon search bar and it will display several options. The results will identify the applicable TV's by manufacturer. Insignia is displayed. You'll pay between $8 and $11.