inputs.text: look places buying - purchased 4 units not long ago seem ok actually volume unit individually not good low need buy additional headphones expert conect 4 suv work one wish work individually three kids watch movie different movie want problem wasnt expected email vendor reguardless one units audio input output actually sound vehicle wasnt working properlyand told megreetingswe apologize experiencing problems unit previously purchased discounts jungleour company offer 30 days return policy take care problems arise unit purchased periodunfortunately purchase date passed 30 day period please contact manufacturer thank youregardsdiscountsjungle team jvtoll free 18885864538monfri 9am 5pm psti contacted manufacturer told dont deal privite companies contract luckily guy told mas going make exeption try help please soon buy items go get connected cant believe amazon letting guys stay business type warranties good luck everyone