$ 2,795.00
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The EQP-1S3 is a very rare variant of the EQP-1A3, which features modified low-frequency shelf boost/atten curves, additional peak boost frequencies & high-frequency shelf boost.

In addition to our faithful recreation of the original vacuum tube make-up gain EQP-1S3, we have also recreated the EQP-1S3 version based on the legendary API 2520 op-amp.  

Specifications:

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 OhmsOutput Impedance: ~50 Ohms

Noise: 92 dB below +10 dBmDistortion: ≤ 0.15% at +10 dBm into 600 Ohms

Amplifier: Flat, 20 CPS to 20 KCS, +/- 0.5 dBTubes: 1 ea 12AU7, 12AX7, 6X4 

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