DSP-Quattro is an extremely powerful sound editor for the Mac OS. It's a highly innovative product that utilizes the latest technological advances of computer-based sound editing.

DSP-Quattro, with it's foundation being the well-seasoned D-SoundPRO, benefits from 10 years of development and professional use in the audio production community. As the newest evolution, DSP-Quattro injects new life into sound editing by expanding the possibilities of simple sound editing into a full-fledged, professional audio workstation, effortlessly accommodating music production, plug-in hosting and advanced audio editing. You can even create final mastered files in DSP-Quattro, ready for pressing CDs.

DSP-Quattro is designed for the most discriminating professional users. However, because of it's simple and intuitive interface, DSP-Quattro is also an ideal product for novices in the field seeking to discover the world of digital audio. DSP-Quattro allows for professional results, it is simple to use, and with plug-in hosting capabilities, offers seemingly endless possibilities.

New in this version:
-now the PlayList window has a title according to the current PlayList file.
-improved AIFF protocol, now DSP-Quattro does not fail to load AIFF files generated by new versions of QuickTime.
-even better code optimization.
-several minor things.
-NOTE: Roland S760 SCSI dumps are supported on MacOS 8/9 ONLY.
-fixed a problem of audio corruption occurring when playing fast-backward the PlayList on crossfades between tracks
-fixed a problem of plug-in latency compensation on the PlayList.
-fixed a problem displaying the program preset names for AU plug-ins.
-other minor bug fixes

Requirements:
-OS X 10.3 and later
-CPU 604 with second level cache

However, author recommends the use of a Macintosh G4 400 or more powerful, 128 MBytes of RAM, and 10 MBytes of free space on the HD, for better performance.