Pulse-Tec EQs v2 is a faithful plug-in emulation of classic passive analog equalizers, featuring three modeled modules, an analog saturation circuit, and a resizable interface for full-range tonal shaping.

Purpose and Core Design
Pulse-Tec EQs v2 recreates the sound of legendary passive analog equalizers from the mid-twentieth century, known for their smooth, musical tonal adjustments. The plug-in models the complex behavior of tubes and transformers through an adjustable analog circuit module, which introduces a pleasant saturation effect to any audio passed through it. This makes the unit ideal for adding warmth and character while performing equalization tasks.
The v2 release includes a fully rewritten DSP engine, guaranteeing more accurate modeling and improved stability. A brand-new resizable user interface offers two distinct skins, catering to different visual preferences without altering functionality. Additionally, a new HLF-3 filter module expands the tonal capabilities beyond the original equalizers, providing extra flexibility for sound shaping.
Key Capabilities: Filter and Midrange Modules
The HLF-3 module provides vintage-style high-pass and low-pass filters, each with a fixed twelve decibel per octave slope. Each filter offers ten selectable frequency options, allowing precise control over the audible spectrum. Users can enable or bypass each filter independently, making the module useful for removing rumble, taming harshness, or creating space in a mix.
The MEQ-5 module focuses on midrange equalization, featuring two peak boost bands and one dip attenuation band. An added enhancement over the original hardware is the inclusion of two dip filters that can operate simultaneously, offering more surgical control over problematic midrange frequencies. This module is particularly effective for shaping vocals, guitars, and other instruments that occupy the presence region.
Workflow: EQP-1A and Master Section
The EQP-1A module provides three filters: a low shelf, a high peak, and a high shelf. The low band allows simultaneous boosting and attenuation, enabling the classic ‘low-end trick’ that adds weight and definition to bass frequencies. The high peak and high shelf are dedicated to boosting and cutting respectively, providing distinct high-frequency shaping options.
The PRE-2S module acts as the master section for the entire equalizer chain, offering controls for input and output levels, the amount of analog character, and a dry/wet mixing ratio. This allows for parallel processing and fine-tuning of saturation intensity. The ability to disable or enable each module individually ensures that users can employ only the needed sections, streamlining the workflow.
Practical Applications and Integration
Pulse-Tec EQs v2 is suitable for mixing and mastering applications where adding analog warmth and musical EQ is desired. It excels on individual tracks such as vocals, drums, or bass, providing both corrective and creative tonal adjustments. The saturation circuit can add subtle harmonic richness to otherwise clean digital recordings, helping them sit better in a mix.
Using the three EQ modules together allows for full-range equalization in a single plug-in, simplifying the signal chain. Engineers can engage the HLF-3 for filtering, the MEQ-5 for midrange shaping, and the EQP-1A for bass and treble control, all while adjusting the overall character with the PRE-2S. This integrated approach is efficient for both mixing and mastering bus processing, delivering cohesive results.
Key features
- Faithful emulation of three classic passive equalizer modules
- Adjustable analog circuit module replicating tube and transformer behavior
- Rewritten DSP engine for improved accuracy and performance
- Resizable interface with two selectable skins
- HLF-3 module with high-pass and low-pass filters, each with ten frequency options
- MEQ-5 module with two peak boost bands and two simultaneous dip filters
- EQP-1A module featuring low shelf, high peak, and high shelf filters with independent boost/attenuation
Best for
Best for mixing engineers and producers seeking to add vintage analog character and smooth equalization to individual tracks or full mixes. It is particularly effective for enhancing low-end punch, taming midrange resonances, and introducing subtle saturation, making it a staple for genres like jazz, rock, and pop that benefit from musical EQ.