Cognate Pultrick

Cognate Pultrick - the Pultec trick, in your Anagram.

A faithful model of the EQP-1A circuit — valve warmth, transformer iron, and the famous boost-cut trick that's been quietly shaping great bass tone for sixty years.

The EQP-1A has been a studio secret weapon for decades — loved for its warm valve character, its musical low end, and a quirk its designers never intended. Boost and cut the same low frequency simultaneously and something unexpected happens: a complex, interactive response that tightens and fattens at the same time, in a way no conventional EQ can replicate. Engineers have been exploiting this ever since.

Cognate Pultrick models that behaviour faithfully. Not just the EQ curve — the full circuit, with component interactions, valve saturation, and the signature iron transformer that gives the real thing its low-end grip and top-end air. Running two EQs in series doesn't get you here. The Pultec sound comes from the interplay of the hardware itself, and that's what we've captured.

Controls follow the classic EQP-1A layout: a selectable low-frequency band with independent boost and cut, a high-frequency band with selectable frequency, boost and resonance, a high frequency attenuator, and output level. The magic is in how the low band's boost and cut interact when you push. High-frequency sweetening brings out attack and presence without harshness, thanks to the attenuator, and the low band does what it's always done in the right hands: makes bass sound like bass.

Warm. Tight. Musical. The trick, modelled.

Cognate Pultrick is in the EQs, Filters & Dynamics category.

Channels

Mono in / mono out

CPU

0.8%

Version

1.1.2 · 01/10/2026

What's new

Removed a faint hiss and lowered CPU use.
HF Boost now peaks exactly at the labelled frequency, and the EQ knobs respond more quickly.
Left and right now stay identical when Pultrick follows a stereo block.
Background graphics altered to enhance readability of Anagram’s VU meters.
Styling of Scene mode parameter indicators and the block name improved.

Manual

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