The RS Active have separate low and high beams under a single glass face.

Here's a pic of my RSA showing the two separate reflectors and bulbs.



The only light that really replicated the RSA are the PIAA 960 and 940. The 940 is sort of small and not very robust. The 960 is just slightly larger and really well built. I bought a few pair of them to upgrade my RSAs. Here you can see one of the 960 compared to the original RSA light.



Installed and up close you can see the separate reflectors for high and low beams behind the lens.