Compressor

Dual-channel 500 Series Class A mic pre

Opto-cell limiter

Tone Shaping Microphone Preamp

Bus Compressor

553 style equalizer

Recreation of the vintage API 553 EQ

stereo bus compressor

6 band equalizer with AIR BAND

Single channel tube compressor

Passive Equalizer

DIY 500 Series FET Compressor

500 Series 4-band Single-channel Equalizer

DIY 500 Series FET Compressor

DIY 500 Series Opto Compressor

Tape Emulator with variable Silk/Texture control

2 stage mic preamp

The only sweepable parametric EQ that API has ever made.

compressor/limiter/expander/gate module from the 90's

Single channel pure tube preamp

Stereo VCA Compressor

500 Series G-series Stereo Bus Compressor with Six Ratio Settings and Five Release...

Multi-band compressor/enhancer

Single-channel compressor module

Single-channel compressor module

high-performance bus compressor

Solid State Logic 611DYN E Series Dynamics Module

Solid State Logic E Series EQ Module

Single Channel Mono Pre-Amp

Single Channel Discrete Optical Compressor

Mono optical compressor based on the classic LA tube opto compressor

Pre Amp

Equalizer

Pulse Width Modulated Compressor

500 Series Ladder Filter

Mic Pre Amp designed to re-create the vintage sound characteristics of the early 1970s...

Multi-Purpose Tone Module

Mic Pre Amp

500 Series Valve Equaliser

Pre Amp