Do the Impulse/SL MK III have polyphonic aftertouch? 24 October 2018 11:16 Updated Applies to: Impulse, SL Mk III These keyboards feature channel aftertouch but do not have polyphonic aftertouch abilities. Related articles What is the difference between Launchkey Mk1 and Launchkey Mk2 Getting Started with SL MkIII // Components Launchpad Comparison Novation Product User Manuals Why isn't Middle 'C' in the centre of the Impulse keyboard by default? Was this article helpful? 0 out of 0 found this helpful