The Alesis 3630 is a vintage, dual-channel compressor/limiter with an integrated gate, known for its affordability and versatile use in both studio and live sound. It features independent channels with controls for threshold, ratio, attack, and decay, and offers both RMS and Peak compression styles, along with soft and hard knee options. The unit is also recognized for its sidechain input, stereo linking capabilities, and its distinct, often harsh, sound that was famously used by artists like Daft Punk.