Black Sun Empire have some tutorials on their YouTube channel and this one is next level and shows you exactly how to create a reece bass the right way. It’s often described in forums and i’ve seen plenty of tutorials
Please make sure you have the latest version of Zebra from Uhe. Get Zebra Here. Apart from Serum by Xfer this is probably my most loved synth but least used. I often find presets to be epic or pants but the engine underneath is capable of amazing sounds with minimal CPU hit, especially super saw sounds. It’s a little too advanced for it’s own good! Please support and buy the synth if you can, developers of audio stuffs are rarely rolling in cash.