Single channel discrete filter bank for the 500 Series with API 2520 and 2510 Op-Amps The 565 Filter Bank module has circuits that are true to the musical filters of the famed 215 module found in... View more
Classic 500 Series peak detecting "feedback" compressor/limiter with variable threshold and output levels Originally released in the 70's, the API 525 is a "feedback" type compressor. An input... View more
Discrete 500 Series 3 band EQ with API fully discrete circuit design Few equalizers enjoy the respect and admiration of the coveted API 550A. Designed by the now-legendary Saul Walker in the late... View more
Discrete 500 Series 3 band EQ with an additional filter band and several new frequencies Based on API's original 550 from the late '60s, the API 550b is a continuation of the EQ that played a major... View more
VCA based 500 Series compressor/limiter, improved version of the API 527 The API 527A Compressor/Limiter takes its place alongside the family of API VCA based compressors, including the 225L... View more
500 Series stereo compressor based on the 2500 bus compressor The new 529 Stereo Compressor combines the unmistakable sound of API's compression technology with the convenience and popularity of the... View more
Discrete 500 Series 10 band graphic equalizer Originally conceived for use in API consoles of the '60s and '70s, the 560 is a unique device designed to accomplish tasks that no other EQ can.... View more
Analog compressor with the original ATI Paragon Console compressor circuit re-engineered for the 500 series format with variable Threshold, Ratio, and Make-up Gain controls The API Select SV12... View more
4-Band EQ based on the APSI 562 with 12dB of boost cut and continuously variable frequency and gain on each band The API Select SV14 EQ circuit design is likewise rooted in API's history. Faithfully... View more
Series-500 device with variable attack, seven selectable release modes, a unique ceiling control, analog gain reduction meter and balanced input/output for precise performance Since the early 1970s... View more
