Empirical Labs PUMP User Manual

- 2 -
What is PUMP?
PUMP is a single-channel, 500 series rack mount
Compressor that’s loaded with the kinds of features and
performance you’ve come to expect from ELI. PUMP’s fully
analog signal path has serious heritage and shares family
DNA with our renowned Distressor, as well as our Arousor
and Mike-E products. The PUMP is destined to be a “go-to”
processor for the creative audio pro as a tool built with no
compromise on performance, quality, and value.
Features
• Classic Knee topology inspired by our ubiquitous Distressor.
• Distressor Compressor envelope generator. Fast, yet
musically saturates at high gain reduction.
• Digitally stepped Attack and Release controls for easy recall.
• Saturation circuit that scrunches the highs and allows hotter
levels like tape, and uses filtering combined with germanium
circuitry to add famous Empirical Labs color.
• Attack Modification (AtMod) first seen in the Arousor plug-in.
• Switchable 110Hz Detector High Pass Filter stops low
frequencies from triggering the compressor.
• DC Coupled Input and Outputs.
• Selectable Single Ended or Differential output.
• A “BAD!” Hard Clip Indicator lights – A “Bad” Clip LED that
lets user know they are within 1dB of hard clipping. It monitors
almost every section for internal clipping.
• Highest quality components. All metal film and 1% resistors
in the audio path - top quality components, most being high
temperature military spec parts.
• Three year limited warranty. Built and calibrated in USA.

Empirical Labs PUMP Specifications

General

Brand	Empirical Labs
Model	PUMP
Category	Recording Equipment
Language	English