Since its introduction, the 3630 compressor has become the most popular dynamics processor ever made. The reason is easy to understand: it provides two independent full-featured compressor/ limiters in one rack space while offering excellent sonic quality for any application from studio recording to live sound or broadcast. The 3630 offers ratio, threshold, attack & decay controls to customize its compression response for even the toughest signals. You can also choose between rms & peak compression styles, plus hard & soft knee dynamic curves for every application from subtle gain control to in-your-face punch. As an independent dual-channel compressor, the 3630 offers separate controls for two different source signals. Plus, two fully independent gates w/threshold & rate controls allow you to easily & efficiently stifle unwanted ambient noise. Other advanced dynamics processing features such as precise signal metering, a sidechain for keying or ducking effects & stereo linkable operation make the 3630 the most powerful compressor in its class.