API 525 Discrete Compressor Re-Issue Release times vary with frequency, with high frequency / full bandwidth content released faster than lower frequencies for natural envelope tracking. Attack time is fixed, chosen to catch the fastest peaks, without "pumping". Equally useful as a tracking, mixdown or program compressor/limiter, the 525 utilizes "vintage" dynamics control and an easy to use multi-function control set. The 525 has a hard-wire bypass switch, a balanced input, and a pinout that is the same as all the other 500 series modules. Two or more 525s can be linked for multi-channel compression. The API 525 Compressor makes use of the 2510 and 2520 op-amps and exhibits the reliability, long life, and uniformity which are characteristic of all API products. • 500-series Compressor Re-Issue • A Reissue of a 1970s Classic! 500 Series Compressor/Limiter s:500_serieslunchbox500 series • Single-channel Modular Compressor, 500 Series, Classic Reissue with Variable Threshold and Output Le