Rupert Neve 535 500 Series Diode Bridge CompressorThe 535 Diode Bridge Compressor features advanced timing control, low noise, fully stepped controls, and internal parallel processing capabilities. The RATIO control has six selectable positions on a rotary switch, allowing the user to set the slope of the compressor curve with pre selected ratios of 1. 5: 1 through 8: 1 for levels above the determined THRESHOLD. This range of compression ratios allows the user to compress as moderately or heavily as