browse 500 Series

Discrete compressor with variable attack and release.

3 bands of classic API equalization

Special Edition 10-band Graphic EQ based on the original API 560 EQ

Limited Edition 312 Microphone Preamp based on the original 1970’s 312 PCB Design

Limited Edition 3-band EQ based off the legendary 1971 550A

API’s Classic 312 Microphone Preamp in a 500 Series module

VCA based Compressor/Limiter with API’s patented THRUST® circuit

Original compressor circuit designed for the ATI Paragon Console with API’s patented THRUST®...

4-band Parametric EQ based on the classic APSI 562 EQ

8-slot 500 Series rack designed to accept all API standard 5.25″ X 1.5″ modules

Filter Bank module based on the 215 module found in large format API consoles

Line Amplifier modeled after API’s highly prized console-based 325 booster cards