Patching Panda implemented thru-zero FM/PM for an immense variety of textures and harmonics. BD-Z features a great amount of CV inputs for modulation, to shape the sound, transform and morph it into many other drums sounds like bongos, congas, etc.
The circuit was carefully designed to maintain the signal gain, regardless of the setting. It will always be punchy and when the amplitude decay or the distortion is fully open it won't get out of control.
The distortion can be subtle or aggressive, it has a dedicated accent input like some vintage drum machines to add dynamics to the rhythms. Pretty handy are the two amplitude envelope outputs. With these you can control other modules, his way they can “react” to the bass drum sound. Send the inverted envelope output to a VCA controlling your bassline, lead sound or reverb and you get…you know it.