Independent Compressor / Dynamic EQ / Limiter per channel. Relative-threshold Dynamic EQ remains calibrated for all levels. Auto mode for fast setup of Attack and Release. External side-chain with balanced / unbalanced 1/4 TRS input. Side-chain has a parametric EQ with Compress, Dynamic EQ and Listen modes. Adjustable soft or hard knee compression. Independent metering: Side-chain level, Threshold indicator, Gain reduction and Limiter headroom. Stereo Link between channels 1 and 2 or 3 and 4. XLR and 1/4 TRS input / output connectors. Universal internal switching power supply (100-240V).