Note: After finalizing your order for this downloadable product you'll receive an activation key via email. This email will include a product link and directions for downloading. (Credit approval may take up to a 24 hours.) Downloadable products cannot be returned. The Kramer PIE Compressor is modeled on the Pye, which was a mainstay in esteemed British studios throughout the classic rock era, and considered by many to be one of the best bus compressors of all time. PIE Controls: Threshold: sets the gain reference point beyond which compression begins. Ratio: controls the amount of gain reduction for signal above the threshold. Decay Time (Release Time): sets the recovery speed of the gain attenuation when the input drops below the threshold. Output: sets the output level. Meter Select: toggles between Input, Output, and Gain Reduction metering. Analog: controls analog characteristics caused by noise floor and hum, based on the power supplies of the original units. VU Meter: displays input or output level in dBVU. Clip LED: lights up when levels exceed 0 dBFS. VU Calibrate: controls the VU meter headroom calibration.