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1.2 Product Overview
ABOUT PULTEC
Custom-engineered and built by hand, the original Pultecs have long been a top choice of leading
recording and mastering engineers. Pultecs are known for their ability to bring out individual frequency
ranges without significantly altering other frequencies.
In 1951, Gene Shenk and Ollie Summerland of Pulse Techniques Inc. introduced the first passive
program equalizer, the EQP-1. Using equalization circuit designs licensed from Western Electric, the
initial Pultecs suffered the gain insertion losses typical of passive filters. So, they added a gain makeup
stage, using a push-pull design with multiple vacuum tubes. The result is the classic we’ve come to know
as the EQP-1A.
Conceived and created for broadband equalization, the EQP-1A features four low boost/cut frequencies,
three high-cut frequencies and seven HF boost points, along with a bandwidth control for shaping the
high boost curve.
Waves PuigTec EQP-1A User Manual
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