Pultec EQP-1A Tube Program Equalizer

The Pultec EQP-1A is the most legendary tube equalizer in recording history, renowned for its ability to add weight, presence, and silky top end with unmatched musicality. First introduced in the 1950s and still hand-built to original specifications, the EQP-1A remains an essential tool for engineers seeking the warm, natural sound that has defined countless hit records.

Its unique passive EQ design with a tube makeup amplifier delivers smooth, broad curves that make boosts and cuts sound effortless and natural. The EQP-1A’s flexible controls allow you to:

• Boost and cut low frequencies (20–100 Hz) simultaneously for the famous “Pultec low-end trick”—tight, powerful bass without muddiness.

• Add silky high-frequency boost (3–16 kHz) with adjustable bandwidth, perfect for vocals, guitars, and mix sheen.

• Attenuate highs (5–20 kHz) to tame harshness while maintaining clarity.

From vocals and bass to drums, guitars, and full mixes, the EQP-1A excels at both subtle sweetening and bold tonal shaping. Its combination of musical EQ curves and tube warmth make it as relevant in today’s mastering studios as it was over 70 years ago.

Bring the legendary sound of the Pultec EQP-1A into your studio and experience why it remains the gold standard for analog equalization.