Rabbit hole is absolutely right. An expensive one at that. With my PAL GC I use an OSSC which I've had for 4 or 5 years. It's a bit long in the tooth now, as well as being expensive. If you can find a one, a RetroTink 2x is probably the best bang for buck. There is also the GBS Control - very much another rabbit hole. AFAIK anything else is going to be no better than the analogue input of your TV.
Rabbit hole is absolutely right. An expensive one at that. With my PAL GC I use an OSSC which I've had for 4 or 5 years. It's a bit long in the tooth now, as well as being expensive. If you can find a one, a RetroTink 2x is probably the best bang for buck. There is also the GBS Control - very much another rabbit hole. AFAIK anything else is going to be no better than the analogue input of your TV.