@KRIZ and @danoise - have you seen @Raul’s SMC Tool? It can get some really interesting results. Although not fully granular, you can definitely get some of the lowercase, glitchier sounds if worked with properly. Not boom-boom music typical repeater glitches (although you can DEFINITELY do that), but experimental electronic glitch. Crackles, pops, buzzes, and more.
Also, drawing your own waveforms can definitely get very close to what is happening in Polyend. One other thing that made for some interesting results is putting the Cabinet Simulator AFTER the mpReverb, and adjusting the mid-range. You’ll get some very nice Max/MSP - PureData reverb sounds. A warmer reverb, very full.