"There is a new graphic Cut Editor which offers the maximum flexibility doing click-free cut&paste of audio waveforms, allowing you to draw x-fades curves by yourself. There is an astonishing built-in de-clicker tool for audio restoration, side by side with a new pencil tool to re-draw waveforms by hand, and also a very useful gain tool to manually lower transients by a real-time graphic control. Moreover, new High Quality Time Stretching and Frequency Shifting algorithms are built-in in version 4, there is a new graphic editor for Fade-In/Outs, up to 4 Aux busses to address outputs, user configurable key commands, unlimited number of effx slots to insert plug-ins, a new internal 'plug-in' module to address external audio hardware for external audio processing and much more."
Pricing and Availability:
DSP-Quattro 4.0 is now available for 75 euro/ $99 USD.
Owners of DSP-Quattro version 2.x or 3.x can upgrade to DSP-Quattro version 4.x for 15 euro / $19 USD.
If you purchased a 3.x license after the 1st of March 2012, please contact the support, the upgrade to version 4 is for free.