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Pultec EQP-1S Program Equalizer

Pultec EQP-1S Program Equalizer

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Pultec EQP-1S Program Equalizer, Angle

The Pultec EQP-1S is a faithful recreation of the legendary program equalizer to exacting standards. 


The Pultec EQP-1S varies from the better-known EQP-1A with different low-frequency curves, additional HF Boost frequencies and shelf boost modes. The Low frequency shelf curves feature different frequency points with a choice between 30Hz, 40Hz, 70Hz and 100Hz.  High frequencies are also modified featuring additional frequencies (1kHz, 2kHz, 3kHZ and 6kHz) as well as the inclusion of two-shelf boost at 5kHz and 10kHz.  


Pultec EQP-1S Main Features:



  • 30, 40, 70, 100 CPS shelf boost, 0 - 13.5 dB

  • 30, 40, 70, 100 CPS shelf attenuate, 0 - 17.5 dB

  • 1, 2, 3, 4, 5, 6, 8, 10, 12 KCS peak boost, 0 - 18 dB;

  • 5, 10 KCS shelf boost, 0 - 14 dB

  • 5, 10, 20 KCS shelf attenuate, 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

Short Description Faithful recreation of the legendary EQP-1S. Unique LF boost curves, Additional HF frequency selection and two shelf modes
Demo in Store No
Manufacturer Pulse Techniques
Old Price N/A
Valve / Solid State Valve
Q Type No
High Pass Filter N/A
Low Pass Filter N/A
High Frequency Range No
High Mid Frequency Range No
Mid Frequency Range No
Low Mid Frequency Range No
Low Frequency Range 30Hz, 40Hz, 70Hz, 100Hz
Bypass No
Channel Count Single Channel
Digital I/O N/A
Chassis Rackmount

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