Pultec EQP-1S3

While the EQP-1S3 and EQP-1A3 are very similar, there are some big differences between the two equalizers. In the EQP-1S3, the Pultec team created a two-band equalizer that has more frequencies available (both on the low and high shelf) and extremely distinct curves. If you’re looking to give your sound an unforced airiness, the EQP-1S3 can help you achieve the recording quality that you’ve been dreaming about at night.

Specifications:

• Low shelf boost: +13.5 dB @ 30, 40, 70, 100 Hz
• Low shelf attenuate: -17.5 dB @ 30, 40, 70, 100 Hz
• Mid/high peak boost: +18 dB @ 1, 2, 3, 4, 5, 6, 8, 10, 12 kHz
• High shelf boost: +14 dB db @ 5, 10 kHz
• High shelf attenuate: -16 dB @ 5, 10, 20 kHz
• 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 each - 12AU7, 12AX7, 6X4