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The Empirical Labs Pump is a powerful compressor that shares the DNA of notable ELI processors - including the renowned Distressor, Arousor, and Mike-E - brought to the 500 Series format. The intuitively laid out front panel includes knobs for attack, release, input trim, and output make-up gain, plus a continuously variable attack modification for shaping transients. Additional buttons engage ratio, bypass, and turn on Saturation Mode.
Starting at the top, PUMP includes controls for Input Level with a clip (BAD) indicator. There are 8 selectable compression ratios from 2:1 to 20:1 and everything in between, each with their own unique curve. Independent digitally-stepped knobs provide precise recall of Attack and Release selections – including a soft Opto-Coupler style Release. PUMP has a switchable 70 Hz High Pass Filter, comprehensive Gain Reduction metering, Attack Modification (AtMod) to slow the initial onset of the attack envelope to preserve more transient content for greater overall impact – with a Bypass selection to go dry.
One of the most unique features of PUMP is AtMod, short for Attack Modification. First seen is our Arousor plug-in, AtMod is a feature never before found in a hardware compressor.
AtMod gives users the ability to slow down the initial slope of the attack envelope to add just a little bit more of the transient back into the track. Whether it’s to get a little bit more snap on the snare track or more thump on the electric bass, the AtMod will let the transients through without losing your desired amount of compression.
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The best gear advice always comes from those who use it the most. That's where you come in! Let the pro audio world hear your voice with a review of the Empirical Labs Pump 500 Series Classic Knee Compressor . Once you submit your review, please check your email and verify your address to have it posted.
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