Compared to the Ableton M4L version, the new VST/AU plugin has been completely rewritten from scratch in C++ for better performance.
Most obviously, as a VST/AU the new Impact can be used in any plugin host as a mono or stereo effect or insert.
Also, the new Impact:
has saturation parts improved with resampling changes
has dynamics sections improved with better detection algorithms
has the same array of unique internal routing options, but switchable in real time without any clicks, as well as dynamically managing it’s CPU load
has new and improved metering and displays that render on the GPU
has a brand new modern interface (that can be resized)
has additional plugin features like AB compare
and more!…