If your goal is high quality Composite/S-Video output, take a look at this:
http://retro.68k.pl/The added benefit is that if you have a 15KHz-capable VGA display, it will support that also. The only downside I have heard so far is you need a PAL Amiga.
I did not get a response back from my last email inquiry I sent in so that could also be a problem. Not sure if these are generally available right now.
Is GBS-8220 quite better than A520's composite output?
I decided to modify A520 to get s-video but I don't have any device with s-video input.
I want to order GBS for my A2000 since Indy is expensive and can be used only for one device.
Edit: where to order GBS? from this or?
https://www.amazon.com/Andoer-Portable-GBS-8220-Definition-Converter/dp/B00XKWX0SY