When I was developing 'Aces High' I didn't set out to make it sound like a anything specific. I just wanted to make something that would give me a variety of distortion to play whatever I wanted.
The Saturation and Gain controls work independently of each other. They're basically two gain controls. You can use one or the other or both together. Crank the Gain and Saturation and you can chug out some mean riffs. If you want something more in the overdrive category flip the switch to "Climb" for a boost in mids, roll Saturation and Gain back to minimum and tune it to taste. If it's a metal sound you crave then crank the gain and switch to "Cruise" to scoop the mids.
There's a lot you can get from this pedal. I hope you enjoy it as much as I do.