The MXR Studio Compressor features Attack, Release, Ratio, Input, and Output controls so you can fine-tune your compression level—from subtle to squashing—right on stage with visual feedback from a bright LED gain-reduction status meter. Constant Headroom Technology provides tons of headroom for clear, transparent performance that’s as dynamic as you need it to be. It’s all packed into a durable, lightweight aluminum-housing that’s the size of a Phase 90.