The EQP-1S3 with full-range progressive-taper stepped controls – mastering precision in 2U. The Pultec EQM-1S3 takes the EQP-1S3 a step further: boost and cut pots become 21-position Elma switches (bandwidth 11-position) with precision metal-film resistors. Steps are 0.5 dB for the first half of rotation, then larger, so you get subtle mix-bus moves and full tracking range in one unit.
Why customers choose it
Who it is for
Mastering and mix engineers who want EQP-1S3 flexibility with exact, matched settings.
Specifications
| Type | Program Equalizer (mastering) |
|---|---|
| Amplifier | Tube |
| Format | 2U / 19 in |
| Low shelf boost | 30, 40, 70, 100 Hz shelf boost, 0 – 13.5 dB (FRPT stepped control, 0.5 dB steps 0–5 dB) |
| Low shelf cut | 30, 40, 70, 100 Hz shelf attenuate, 0 – 17.5 dB (FRPT stepped control, 0.5 dB steps 0–5 dB) |
| High peak boost | 1, 2, 3, 4, 5, 8, 10, 12, 16 kHz peak boost, 0 – 18 dB (FRPT stepped control) |
| High shelf boost | 5, 10 kHz shelf boost, 0 – 14.5 dB (FRPT stepped control) |
| High shelf cut | 5, 10, 20 kHz shelf attenuate, 0 – 16 dB (FRPT stepped control) |
| Input Impedance | ~600 Ohms |
| Output Impedance | ~50 Ohms |
| Noise | 92 dB below +10 dBm |
| Distortion | ≤ 0.15% at +10 dBm into 600 Ohms |
| Amplifier response | Flat, 20 Hz to 20 kHz, +/- 0.5 dB |
| Tubes | 1 ea 12AU7, 12AX7, 6X4 |
| Finish | Pultec blue |
| Built | By hand, to order, in Fort Collins, Colorado |
| Controls | Stepped (mastering) |
Good to know
- Rack-mount unit for a standard 19-inch rack.
- Hand-built to order by Pulse Techniques in Fort Collins, Colorado.
- Pultec controls interact: when boost and cut are used together, the effective step size changes.
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