I want to use my Apple TV with my AE Acoustic 2.1 in the Bedroom but this only has RCA Inputs. Do I need as D/A Converter from Tousling to 3.5mm Jack or will the leads on eBay I see that have Tousling one end and a 3.5mm Jack the other be OK? I cant see how that lead converts the signal with a DAC? Looking for the cheapest option ideally as its only occasion use... Thanks in advance.