Pultec EQP-1A

20, 30, 60, 100 CPS (Hz) shelf boost, 0 – 13.5 dB

20, 30, 60, 100 CPS shelf attenuate, 0 – 17.5 dB

3, 4, 5, 8, 10, 12, 16 KCS (kHz) peak boost, 0 – 18 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