Automated Processes Inc. is an American company that designs, manufactures, and markets mixing consoles and signal processors, including modular signal processor units in the 500-series format standard that evolved from early API mixing consoles.

A mixing console or mixing desk is an electronic device for mixing audio signals, used in sound recording and reproduction and sound reinforcement systems. Inputs to the console include microphones, signals from electric or electronic instruments, or recorded sounds. Mixers may control analog or digital signals. The modified signals are summed to produce the combined output signals, which can then be broadcast, amplified through a sound reinforcement system or recorded.