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Effects processing covers a wide array of processes and technologies used to create "ear candy" in a mix. There are many different effects available, ranging from reverberation, or reverb, easily the most commonly-used effect, to chorus, flanging, delay, harmonizing, pitch shifting, phase shifting, filtration and equalization, stereo and surround processing, and dynamics processes such as compression, limiting, expansion and ducking.

Effects processors were originally mechanical processes, in which various components were set up together to create a resulting effect. For example, a room might be miced, and the mix played back into the room, in order to record the room's reverberant ambience with the track, or, two tape decks playing identical audio tracks could be used together to create the subtle phase sweep we now call flanging (pronounced "flanjing", and not "flang-ing", as some may be tempted to say it). While some producers and engineers still use these old-school techniques to produce an effect, all the most commonly-used effects processes have made their way into rackmount hardware formats, and more recently, across that format, into virtual software units that operate as plugins on a host audio workstation.

Rock Shop Pro Audio offers a selection of world-class stereo and multichannel hardware and software format effects processing to cover any conceivable effects requirement in recording, mixing, post production and broadcast.