And Adrian Sherwood as I recall from various studio videos ; will see if I can find them.
No stereo jack outs, but there is a headphone out (and microphone in) that I use quite a lot for alternate routings with different devices.
I was also rather happy to remember that the Kaossilator Pro can use a number real-time effects on its inputs, and as both it and the KP3 can loop four separate samples as well, the duo make a fun team. I use them often with the likes of a Dreadbox Nyx for all manner of filtered and grain-glitched fun before passing through or alongside other effects (the Bastl Thyme is my current favourite).
It’s the way that the KP3 can record little looped FX patterns, and then reverse them or edit on the fly that makes it shine. Add in the ability to act as a MIDI controller for other devices and they really become quite flexible.