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Recording, Mixing and Mastering

Empirical Labs Pump: 500 Series compressor in vertical and horizontal formats

Published on 31/03/2026

The Empirical Labs Pump is a compressor that brings the character and operating approach typical of the Empirical Labs world into a compact, practical format that can be perfectly integrated into modern studio workflows. If the natural reference is the famous Distressor, the Pump stands out for its ability to offer control, musicality, and immediacy in two different modules designed to fit the real needs of those who work every day with outboards and 500 Series racks.

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Two distinct modules for two different ways of working

It is important to make it clear: the Vertical Pump and the Horizontal Pump are not the same convertible unit, but two different modules. They both share the same sonic DNA and operating philosophy, but are designed to fit into different setups.

  • Empirical Labs Pump vertical: ideal for those using classic 500 Series racks or lunchboxes in traditional setups.
  • Empirical Labs Pump horizontal: designed for those working with desktop racks, flat racks or more ergonomic benchtop configurations.

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Why choose the horizontal Pump format

In recent years, more and more studios, producers and sound engineers have begun using horizontal racks made with 500 Series modules. This configuration allows you to have the controls always in view, easily accessible and seamlessly integrated into your workspace, especially in modern environments where the desk is the true operational center of the workflow.

The horizontal format of the Empirical Labs Pump was born precisely in response to this evolution. It is not just an aesthetic or space-saving choice, but a practical solution for those who prefer more immediate interaction with hardware during tracking, mixing, and creative processing.

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An ideal solution even for those who have always used horizontal racks

The availability of the Pump in a horizontal version is also particularly attractive for those who have always used horizontal racks and do not want to change habits by switching to the traditional vertical format. In fact, in many studios, the setup is already built around a certain ergonomics and precise organization of the workbench.

With the Horizontal Pump, Empirical Labs offers a smart answer to this need: keep the same operational logic as in your studio without giving up a compressor with a strong sonic character that is compact and immediate to use.

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Empirical Labs Pump: dynamic control, character and immediacy

Beyond the chosen format, the Pump remains an extremely versatile compressor, capable of adapting to many production and mix situations. The control panel provides everything you need to sculpt dynamics musically and precisely, with an interface that is quick to understand and quick to recall.

  • Input Gain with BAD clipping indicator
  • Ratio selectable up to 20:1
  • Attack and Release controls
  • Opto mode for a softer, more musical response
  • Built-in analog saturation
  • High-pass filter on detector
  • Output Gain
  • True Bypass

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AtMod: an advanced feature to preserve transients

Among the most interesting elements of Pump isAtMod, or Attack Modulation, a feature derived from the Arousor Plugin.

This feature allows you to apply compression while retaining a better sense of the initial attack of the signal, helping to preserve punch, definition, and presence even when firmer settings are chosen.

This is a particularly useful feature on drums, percussion, synths, bass and vocals-that is, on all those sources where it is essential to control dynamics without losing energy and impact.

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Vertical or horizontal: same sound, customized workflow

The real strength of theEmpirical Labs Pump is therefore the ability to choose the module that best suits your studio. Those who work with traditional lunchboxes and 500 Series racks can opt for the vertical version. On the other hand, those who prefer a desktop layout, already use flat racks or do not want to abandon the convenience of the horizontal format can choose the dedicated version.

In either case, the result is the same: a compact, musical and flexible compressor that can fit naturally into professional setups, advanced home studios and hybrid environments that are increasingly geared toward seamless integration of ergonomics and sound quality.

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Empirical Labs Pump for modern studios and workflow 500 Series

Now more than ever, the world of 500 Series modules is evolving toward solutions that look not only at sound, but also at practicality of use. In this context, the Pump is a particularly smart choice: it retains the Empirical Labs sound identity, but declines it in two formats designed for real-world needs, without forcing the user to adapt their workflow to one physical standard.

Whether you prefer a 500 Series vertical compressor or need a 500 Series horizontal compressor, the Empirical Labs Pump offers a concrete, modern solution that is perfectly consistent with today's setups.

👉🏻 Empirical Labs PUMP Vertical

👉🏻 Empirical Labs PUMP Horizontal

👉🏻 Rack Horizontal Quagliardi Powergrid Duo

👉🏻 Horizontal Rack Quagliardi Powergrid TRIO

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