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Pultec EQP-1S3 EQ Tube Equalizer

Pultec EQP-1S3 EQ Tube Equalizer

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  • Tech Specs
  • Reviews
The (formerly) extremely-rare EQP-1S3 has the same wide-bandwidth line amp as the EQP-1A3, but has modified low-frequency boost/atten response curves, adds 2 additional peak boost frequencies (1k & 2k) and most-importantly adds 2 high-frequency shelf boost curves (5k & 10k corners) to the sonic palette. The originals included 6k peak boost in place of the 16k and that’s the way we built them initially.  But we had so many requests from customers for the 16k and so little interest in the 6k that we now build them with the 16k peak boost center.
More Information
Product Name Pultec EQP-1S3 EQ Tube Equalizer
Brand Pulse Techniques
MPN EQP1s3

What's in the Box?

Pulse Techniques EQP-1S3 EQ Tube Equalizer
  • 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, 8, 10, 12, 16 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

Pultec EQP-1S3 EQ Tube Equalizer

Details
The (formerly) extremely-rare EQP-1S3 has the same wide-bandwidth line amp as the EQP-1A3, but has modified low-frequency boost/atten response curves, adds 2 additional peak boost frequencies (1k & 2k) and most-importantly adds 2 high-frequency shelf boost curves (5k & 10k corners) to the sonic palette. The originals included 6k peak boost in place of the 16k and that’s the way we built them initially.  But we had so many requests from customers for the 16k and so little interest in the 6k that we now build them with the 16k peak boost center.
More Information
Product Name Pultec EQP-1S3 EQ Tube Equalizer
Brand Pulse Techniques
MPN EQP1s3

What's in the Box?

Pulse Techniques EQP-1S3 EQ Tube Equalizer
Tech Specs
  • 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, 8, 10, 12, 16 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
Reviews