RRS CL1 is a stereo and mono audio signal dynamic range compressor designed for iPhone. This powerful compressor offers both technical dynamic range compression and artistic sound coloration, thanks to its unique features. With the ability to add saturation with even harmonics, dithering for an "air" effect, and oversampling with non-linear phase response for "depth," CL1 allows users to achieve professional-quality sound.

The compressor includes a limiting module for controlling peaks, a mid-range equalizer for ISO-226 curves equalization, and an input signal or gain reduction VU-meter with a lamp indicator for limiter operation control. CL1 also offers an adjustable high-pass filter for side-chain signal, as well as support for "parallel" compression and M/S operational mode.

Featuring two different attack modes, "fast" and "slow," users have control over the softness of the compressor characteristics. CL1 supports various operation modes, including double mono, mono with external side-chain signal, mid channel, side channel, M/S, and linked stereo. The plugin also offers pre- or post-limiter options, attack and release times multiplier, internal dithering, parallel compression, and 8x oversampling with 64-bit floating point processing.

To use RRS CL1, simply install it as an AUv3 plug-in in an AUv3-compatible host app like GarageBand, Auria, AUM, Cubasis, and more. With its scalable GUI and comprehensive features, RRS CL1 is a must-have dynamic range compressor for iPhone users seeking professional sound control.