Dumb Q: Drum Kit stereo mix

Cubase Artist comes with Groove Agent One, which has a lot of built in drumkits as well. This offers far more control than HSSE. If you load up Groove Agent One in an instrument track you can control all the individual sounds from the GAO interface, or, if you load it in the instrument rack, you can even assign every sound to a separate output so you can mix your entire drumkit in your Cubase mixer.