Pultec EQP-1S Tube Program Equalizer

The Pultec EQP-1S is a rare and highly sought-after variant of the legendary EQP-1A, offering the same smooth, musical tone shaping with expanded frequency options for even greater flexibility. Hand-built to original specifications, the EQP-1S combines a passive inductor-based EQ circuit with a tube makeup amplifier, delivering the unmistakable analog warmth and clarity that have defined the Pultec legacy for over 70 years.

With intuitive controls and the famous broad, natural EQ curves, the EQP-1S gives engineers powerful tonal tools:

• Low-frequency boost/attenuate (20–100 Hz): Create tight, punchy bass with the legendary “Pultec low-end trick.”

• High-frequency boost (1.5–16 kHz with bandwidth control): Add presence, detail, or silky top end to vocals, guitars, and mixes.

• High-frequency attenuation (5, 10, 20 kHz): Smooth harshness and control brightness without losing clarity.

The expanded high-frequency boost options (starting as low as 1.5 kHz) make the EQP-1S especially effective for vocals, guitars, snares, and mastering work, offering presence and definition where the EQP-1A focuses more on highs.

From subtle sweetening to bold tonal sculpting, the Pultec EQP-1S delivers the same timeless sound quality as its famous sibling, with added versatility for today’s studios. A must-have equalizer for engineers who demand warmth, presence, and classic analog tone.