Poly After Touch and OB-X8

[Analog Prophet]

Bought an Korg Keystage 61 (but returned as MIDI 2.0 didn’t worked out at expected and the keys were not good) that has a Poly Aftertouch and MPE keyboard. OB-X8 receive external Poly Aftertouch and it worked out at once without any problems.

I thought I would use Poly AT for everything, but it wasn’t the case - it works for some few sounds but not the majority of sounds I use.

The next MIDI controller I will buy will be with Poly AT (still there are only some few around but I’m sure it will be more common for new models) as the OX-X8 receives Poly AT. If Poly AT can be set per patch at the controller it would make everything smoother.

[the8bitdeity]

In general all of the aftertouch implementations on Sequential synths have a generic "Aftertouch" amount and it will use Channel or Poly based on what the controlling keyboard sends. That's just kind of how they've done it for a long time and I don't expect it to change. Probably easier to change what type of AT your controller is sending.

[AlainHubert]

I have a vintage Ensoniq SQ-80 with PolyAftertouch and have tried it playing my OB-X8. It works as a polyphonic Aftertouch for the filter (controlling each voice's filter independently) but for controlling the modulation it acts as a channel Aftertouch.

[g3o2]

That’s because on the OBX8 and the Prophet rev 4, the LFO is not polyphonic, aka per voice. Then again, controlling LFO with polyAT is kind of missing the point. In a polyAT setting, you want your fingers to become the LFO or the envelope rather than to control an LFO or an envelope.