PSP develops high quality audio effect and processor plug-ins. Our products garner rave reviews and endorsements from every corner of the music production, engineering, composition, and post-production worlds.  Our  plug-ins have become staples in professional and home studios worldwide.  Our credo explains our simple philosophy: It's The Sound That Counts!


“I'm loving my PSP plug-ins so much. So many varied super high quality effects and processors. My “go to” EQ right now is the PSP E27. I’m also using the PSP SpringBox and PSP 2245 like crazy. I also still rely on an old favorite PSP MixPressor2. They are all great and I use them every day."

Alan Meyerson (Grammy Winning scoring mixer and engineer) Dark Knight, Gladiator, Shrek ...

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