Depends on what you are connecting to on each side of the converter and what you want to put through it (what type of audio content) and the resulting experience you want to get. In other words, ...

RCA to HDMI Converter: Converts analog RCA composite (Yellow, White, Red) input to HDMI 720P/1080P (60HZ) output,displayed on HDTV/Monitor. Plug to Play: ABLEWE Mini RCA to HDMI converter no extra ...