Showing all 24 results


500 Series 3-band Selectable Indutor EQ Module


500 Series 3-band EQ with 5 Selectable Frequencies Per Band, Jensen Input and Output Transformers, and Avedis 1122 Op-amps


500 Series 10-band Graphic EQ with Transformer-balanced Signal Path, Highpass and Lowpass Filters, and 2520 Style Op-amp


The PARAMETRIC EQUALISER 512 is a compact 500 Series 4 band fully parametric equaliser based on channel strip originally provided in the legendary MIDAS HERITAGE 3000 mixing console.

MSRP: $1,049.00

The xfilter 500 is a true linked stereo EQ in the 500 series format. It gives you the expensive sound of an all class-A equalizer in a surprisingly affordable package.

MSRP: $350.00

Analog Phase Tool and EQ

MSRP: $1,375.00

EQ Module with Treble and Bass Shelf, Hi- and Lo-mid 7-selection "Q" Switching, and 3-position Filter, for the 500-Series Rack


500 Series EQ Module from Purple

MSRP: $799.00

500 Series Dynamic Ladder Filter

MSRP: $1,179.00

500 Series EQ Module


500 Series EQ

MSRP: $629.00

500 Series EQ Module

MSRP: $1,195.00

500 Series Equalizer Module

MSRP: $1,175.00

Discrete Single Channel Pultec-style 3 Band EQ for the 500-Series Rack


E-Series 500 Format EQ Module

MSRP: $1,295.00

Features Four bands, Reciprocal and repeatable filtering, 12 dB of boost/cut per band, EQ band 1 and 4 offer shelf/peak switching, fully discrete circuit design, High headroom +30 dB clip level.

MSRP: $1,195.00

It offers 3 bands of classic API equalization, Reciprocal & repeatable filtering, Maximum 12 dB of boost/cut per band, shelf/peak switching, fully discrete circuit design, High headroom +30 dB clip level.

MSRP: $895.00

500 Series 3-Band EQ

MSRP: $595.00

Features, Sweepable low pass and high pass filter, Variable notch filter, Individual bypass switches for each filter section, Transformer Balanced Output, Traditional API fully discrete circuit design.

MSRP: $945.00

Features, 10 bands of API proprietary equalization, Familiar graphics operation on one octave centers, 12 dB of boost/cut per band, "Proportional Q" narrows filter Q at extremes, Center detent for reliable reset, Silent bypass button.


Discrete Two-Stage Transformer Balanced Mono Microphone Preamp & DI - for the 500 Series Rack


Inductor EQ


A ten-band inductor-based graphic EQ – Designed to work in standard 500 series racks.

MSRP: $599.00

4-Band Multi-Topology EQ

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