Every band runs through a real op-amp stage — voiced after the discrete circuits that defined what an EQ could do to a sound, not just to a frequency. Push it and it gives back warmth, density, harmonic weight. Back off and the signal stays cleaner, more transparent. That character is always there, whether you’re sculpting frequencies or not.

Turn a band off and the op-amp stays in circuit. Without drawing any EQ curve at all, you get the harmonic color that hardware EQs only deliver when you boost hard. This is Band Saturation Mode: op-amp character at a specific frequency, completely independent of your EQ moves.

The Contour bands take the classic boost-and-cut trick — the one engineers replicated for years using two separate filters on the same frequency — and make it a single band. One move. Focused boost, automatic complementary dip, no congestion in the surrounding frequencies.

Push Fairuz hard: bold Contour boosts, full Hammer drive, op-amp saturation across every band. Then blend it back with MIX to taste. All the character, as much or as little as you want.

Features

Four op-amp EQ bands with three filter shapes: Bell, Contour, and Contour X2

Band Saturation Mode: decouple the op-amp from the EQ curve for frequency-targeted harmonic character

Proportional Q: gentle boosts stay wide, large boosts focus automatically

Stepped or continuous frequency: stepped points chosen by ear, with deliberate gaps that avoid problem zones

TREMOR infrasonic circuit: sub-bass foundation before the EQ

VOICE input transformer: harmonic drive that sets the tonal stage

Hammer output transformer: body, density, and saturation at the output

LO and HI sculpting shelves with complementary dip behavior

HPF and LPF with switchable HPF position (pre or post transformer)

MIX: parallel wet/dry blend without extra DAW routing

Dual Mono: true stereo hardware behavior for buses and groups

Oversampling for the cleanest harmonic behavior at standard sample rates

Zero latency

home page: https://www.pulsarmodular.com/product/p422-fairuz/