Alto Professional ACL4 - Dynamics Processor

The ACL4 from Alto is a quad channel compressor/limiter that features very user-friendly architecture for fast and reliable compression and limiting. The compressor attack and release times are automatically set dependent on the source material.

Smart Knee Control allows for musical and inaudible compression, while Smart Gain Control automatically reduces the output signal to avoid distortion. The unit can function as either 4 separate processors, or dual-stereo linked to provide real stereo compression on adjoining modules. LED meters on each channel display gain reduction and input/output levels.