how to connect old pioneer stereo and amplifier to new JVC LED tv?

Apr 24, 2018
Hi, got a new tv. with the old I used to connect amplifier to tv through sky box. now with the smart tv, I want to connect the tv directly with the speakers, so watching youtube, I can have the surround sound. I tried optical cable but the stereo only has output. the hdmi converter does not work either. There are two analog cables from amplifier, no hdmi connection, please help. The tv is LT-43C870, the amplifier is M-IS21. thank you