The Pultec EQM-1S Mastering Equalizer is a mastering EQ based on the legendary Pultec EQP-1S design, featuring stepped progressive-taper Elma controls for precise, repeatable settings. It offers the classic Pultec tube-driven sound for adding "Pultec mojo" like low-end weight and high-end air.
The Pultec EQM-1S Mastering Equalizer is a modern, USA-made recreation of the rare EQP-1S, designed for mastering and mix-buss applications by offering the legendary Pultec tube-driven analog sound with added precision and control. It features two bands with separate boost and cut controls to create the famous Pultec "resonant shelf" curves, adding warmth and "air" to audio by simultaneously boosting and cutting frequencies without affecting the midrange. Key enhancements for mastering include full-range, stepped controls for accurate and repeatable adjustments, a modified high-frequency peak boost frequency at 16kHz, and a low noise floor, making it a powerful tool for subtly shaping tracks to perfection.
Pultec EQM-1S Mastering Equalizer Features
- Classic tube circuitry: The EQM-1S uses the same passive EQ circuits and tube amplification stage as the original unit to deliver the signature warm, rich, and musical analog sound.
- Precision stepped controls: It includes mastering-grade stepped controls, with each step providing a 0.5dB change for the initial portion of the control's rotation. This allows for fine-grained, repeatable adjustments for subtle mastering and mix-bus applications.
- "Pultec trick" capabilities: The independent Boost and Attenuate controls for the low-frequency shelf and high-frequency peak allow for the legendary "Pultec trick," where a simultaneous boost and cut creates a unique, musical filtering effect.
- Modified high-frequency options: Unlike some older Pultec units, the EQM-1S includes a 16kHz peak boost frequency, along with the 5kHz and 10kHz shelf boosts, giving engineers more versatility for shaping the high end.
- Variable bandwidth control: The unit features a variable Q type control, allowing you to select how wide or narrow a range of frequencies is affected by the high-frequency boost.
- Low-noise performance: While providing a vintage character, the modern design features an exceptionally low noise floor for a clean, pure sound.
Pultec EQM-1S Mastering Equalizer Specifications
- Low Shelf Boost: 30, 40, 70, 100 CPS, 0 – 13.5 dB
- Low Shelf Attenuate: 30, 40, 70, 100 CPS, 0 – 17.5 dB
- High Peak Boost: 1, 2, 3, 4, 5, 8, 10, 12, 16 KCS, 0 – 18 dB
- High Shelf Boost: 5, 10 KCS, 0 – 14 dB
- High Shelf Attenuate: 5, 10, 20 KCS, 0 – 16 dB
- Input Impedance: ~600 Ohms
- Output Impedance: ~50 Ohms
- Noise: 92 dB below +10 dBm
- Distortion: ≤ 0.15% at +10 dBm into 600 Ohms
- Amplifier: Flat, 20 CPS to 20 KCS, +/- 0.5 dB
- Tubes: 1 ea 12AU7, 12AX7, 6X4
Pultec EQM-1S Mastering Equalizer Includes
- Pultec EQM-1S Mastering Equalizer
- Power Cable
- Manufacturer Warranty
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