Pultec EQP-1S EQ

1-channel, 2-band Tube Equalizer with 3U Chassis, Switchable Frequency Selection, and Variable Bandwidth
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Pultec EQP-1S EQ image 1
Pultec EQP-1S EQ image 1
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Special-ordered from Pultec and usually arrives to you within 1-2 weeks. Please note: special orders cannot be canceled or returned.
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Pultec EQP-1S EQ
Special Order

A Rare Pultec, in Original 3U Form Factor!

In the beginning, Pultecs occupied three rack spaces. In the early 1970s, 2U Pultecs hit the scene. Now, fast-forward several decades, and Pultec has spec'd its EQP-1S EQ with the original 3U chassis. Functionally identical to its 2U EQP-1S3 stablemate (which is based on a rare variant of the legendary EQP-1A equalizer), the EQP-1S can give your tracks the massive bass, silky highs, and addictive warmth that made Pultec a studio standard. Yes, Pulse Techniques is back, building their classic EQs right here in the USA, without compromise or enhancement to the original designs. New Pultecs like the EQP-1S contain only original-spec components and are dead ringers for their vintage ancestors.

Pultec EQP-1S 2-band Equalizer at a Glance:
  • Thank Pultec for decades of amazing recordings
  • Boost, cut, or both - it all sounds great
  • More selectable frequencies than the Pultec EQP-1A3
Thank Pultec for decades of amazing recordings

Magical tools revered for their ability to improve the sound of audio simply by passing signal through them, Pultec equalizers like the EQP-1S are the stuff of legend. You've heard them on countless hits. Rare vintage units cost a pretty penny - if you can find one in good working order. So naturally, there have been many hardware and software re-creations over the years. Well now you can grace your recordings with the sweet sound of the EQP-1S: a genuine, made-in-America Pultec EQ.

Boost, cut, or both - it all sounds great

Take a look at the Pultec EQP-1S, and you'll see it's not designed like your typical equalizer. The 2-band design basically gives you flexible low shelving, along with broad-bandwidth midrange peak control. Because the boost and attenuate controls work independently, you can use an old trick to add weight to the bass region while also notching a bit above the cutoff point, by boosting and attenuating at the same time (try it on your kick drum and you'll never look back). On the high-frequency side, you can set separate ranges for the boost and attenuation. Said another way, you can boost at 12kHz and cut at 5kHz, adding air to a track without increasing presence.

More selectable frequencies than the Pultec EQP-1A3

What's different on the EQP-1S (and EQP-1S3), as compared with the original Pultec design, the EQP-1A3? Well, there are more selectable frequencies on the high band of the EQP-1S, which ranges up to 12kHz (instead of 16k). In general, the equalization curves are also a bit different, and Pultec added shelving 5 and 10kHz settings. And the low band of the EQP-1S sports different frequencies than the EQP-1A3, giving you a slightly different flavor and a bit more flexibility, while maintaining that coveted Pultec sonic signature.

Pultec EQP-1S 2-band Equalizer Features:
  • Single-channel, 2-band EQ built exactly like the original, legendary Pultec units
  • Combines the vintage character of original Pultecs with reliable, modern design
  • Incredibly low noise floor for a pure sound
  • Bandwidth control lets you decide how wide a range you're sculpting
  • Separate boost and cut controls provide extra creative potential
Put a genuine Pultec in your rack: the EQP-1S!

What Does "Special Order" Mean?

A special-order product is one that we don't normally keep in stock. We order it from the manufacturer as soon as you order from us. We have great relationships with all the manufacturers we carry, so we can get your special order to you as fast as or faster than anyone else. Remember that special orders are non-returnable and non-cancelable, so make sure the item is right for you. A Sweetwater Sales Engineer can help you decide — call (800) 222-4700 for assistance!

Additional Media

Signal Processing Buying Guide

Tech Specs

Number of Channels 1
Tube 1 x ECC83, 1 x ECC82, 1 x 6X4
Inputs 1 x XLR
Outputs 1 x XLR
Number of Bands 2-band
Q Type Variable bandwidth
Boost/Cut Range ±18 dB (varies with frequency chosen)
Freq Range High 1kHz-12kHz (10 selectable frequencies plus 5KHz/12kHz shelving)
Freq Range Low 30Hz-100Hz (4 selectable frequencies)
Rack Spaces 3U
Manufacturer Part Number EQP-1S

Customer Reviews

Based on 1 review
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Sounds great, but not like the original.

I did a side-by-side test with this beautifully crafted re-issue Pultec and an original Pultec EQP1A from the mid 1960s. Although the new re-issue sounded very nice on snare, acoustic and electric guitar, as well as voice, it did not have the harmonic richness imparted by the original unit. While some will argue the paper capacitor factor, which are of a different age in the old unit, it is in fact the transformers and inductors which seemingly make the biggest diff. The new parts just do not show for the same build or quality in wire and wind. I would buy the re-issue, but the price is steep. If you're going to spend that kind of money, save up a bit more and buy the real deal so that you have a solid investment.
See also: Pultec, Pultec Parametric EQ, Pultec Parametric EQ