API 525 Compressor

API: 525 Compressor Features Exact reissue of API's original 525 from the early 70's Peak detecting "feedback" compressor/limiter Variable Threshold and Output levels Unique "Ceiling" control combines key functions Analog VU meter for monitoring gain reduction 4 Switchable release modes De-Ess function Traditional API fully discrete circuit design Active Balanced Input/Output Hardwire bypass Originally released in the 70's, the API 525 is a "feedback" type compressor. An input (threshold) control and output (make-up gain) control are provided, along with an additional "Ceiling" fine-tune function which can increase gain reduction (lower threshold) while simultaneously raising output level to match, so the user can alter dynamics "on the fly" without level changes. A compression/limit switch sets ratio at either 2:1 or 20:1. Attack time is as fast as 15u/s. Four auto release modes are offered via two switches, 0.1s, 0.5s, 1.5s, & 2.0s. A De-Ess function inserts an inverse vocal en