It is semi-weighted with assignable aftertouch and has been designed to feel like an instrument rather than a computer peripheral. In addition to feeling good, it is incredibly accurate--this means it can translate musical expression (how you play the keyboard) extremely effectively. So your performance is reflected exactly by the synth or software instrument you are triggering.
Many MIDI controllers have knobs, faders and buttons, but using them is difficult and time consuming. Impulse (as with all Novation controllers) comes with Automap control software. This gives you instant mapping to the things you need to control, meaning you can make full use of faders, knobs and buttons on Impulse to get hands-on with your DAW and plug-ins.
With 8 knobs, 9 faders and buttons, and a custom LCD screen (1 fader and button on Impulse 25), the control surface allows you to get hands-on control for your DAW and plug-ins. Novation has worked with all the major DAWs and plug-ins to make sure that you get instant control of your mixer, transport controls and plug-in instruments and effects.
Impulse has 8 quality-feel drum pads that are velocity-sensitive with aftertouch. These are backlit with 3-color LEDs which means they can do things other drum pads can't, like warping arpeggios in real time, rolling beats and launching clips in Ableton Live (Ableton Live Lite 8 comes with Impulse).
Novation has worked with major music software manufacturers to ensure Impulse gives you instant hands-on control. In addition to the major DAWs--Reason, Pro Tools, Logic, Cubase, and Ableton Live--Impulse and Automap 4 have been specially designed to give you full control of 3rd party plug-in instruments and effects, like Native Instruments, Waves, or FXpansion.
Impulse is USB powered, with expression and sustain pedal inputs as well as MIDI in and out ports for connecting external MIDI instruments.
Novation Impulse 61 USB MIDI Controller Features: