Gain Reduction Indicator: The LED indicator that displays the amount of Gain Reduction based on the ratio of your instruments signal and the level of compression in your signal. Green - Minimal Gain Reduction. Orange - Moderate Gain Reduction. Red - Maximum Gain Reduction (This is not a bad thing).Setting: Smooth Compression, Percussive R&B, Singing Rock Solo, Vintage Squish. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Compressors & Sustainers". The seller is "geartree" and is located in this country: US. This item can be shipped to United States.