This gives you RGB output via scart and has an audio amplifier. This works with the Megadrive 2 RGB Scart. Option to add these which are double screened and good quality. There are additional outputs for RCA, and RGB through seperate channels.
 
For use with the Core 1, Core 2, and white model. I can confirm you get a clear jailbar free RGB image on the original white model, as can be seen in the photos showing the console directly connected to an LCD screen.
 
No soldering necessary, just plug this into the expansion port. No external power required.