SPS-1 Specifications

Preamp Modules

Input(Piezo or Magnetic):
10 Mohm, unbalanced
Input(mini-mic): 15Kohm, unbalanced, +9 Vdc power to mic.
Maximum Input Level: +15.5 dBu (4.6 Vrms)
Input Noise: EIN less than -113 dBu, input shorted.
Frequency Response: +0/-1 dB, 20 - 20,000 Hz
Distortion: THD less than 0.01% at 0 dBu
Gain: 0 to +20 dB, adjustable
Output: Balanced, 3-pin mini-connector

Main Preamp Unit

Module/Mic Input:
3-pin XLR, balanced
Line In: 1/4" phone jack, unbalanced, 10Kohm.
Insert: 1/4" stereo jack, tip=send, ring=return.
Mic Preamp:  EIN less than -128 dBu, 50dB gain.
Frequency Response: +0/-1 dB, 20 - 20,000 Hz
Distortion: THD less than 0.007% at 0 dBu
Output Noise: EQ out, unity gain: less than - 93 dBu, EQ in, set flat: less than - 88 dBu
Maximum Output: +21 dBu, unbalanced, +27 dBu, balanced
Channel Outputs: 1/4" phone jack, TRS balanced, 600 ohm.
Master Outputs: XLR, balanced, pin 2 in phase, 600 ohm.
Monitor Outputs: 1/4" phone jack, unbalanced, 600 ohm.
Effects Sends: 1/4" phone jack, unbalanced, 600 ohm.
Effect Returns: 1/4" phone jack, unbalanced, 10Kohm.
Tuner Output: 1/4" phone jack, unbalanced, 10Kohm.
Phones: 1/4" stereo phone jack, 100 ohm.
Metering: Signal (green): -20 dBu; Peak(red): +14 dBu
Equalizer: Three band fully parametric, ± 15 dB boost/cut
Lo: 35 - 880Hz, 0.1 to 1.0 octave (Q=10 to 1)
Mid: 180Hz - 4.2kHz, 0.3 to 1.0 oct. (Q=3 to 1)
Hi : 0.84 to 19kHz, 0.3 to 1.0 oct. (Q=3 to 1)

Phantom Power:  +48 Vdc applied to pins 2 and 3
Foot Switch: 1/4" TRS phone jack, 10 mA current loop.
Power: 1
20 VAC, 10 Watts

Dimensions

Preamp Module:
1.1" x 2.2" x 1.0", excluding input plug.
Main Preamp Unit: 1.75" x 19" x 8" (1 rack space), 6 lbs.
Foot Switch: 4.3" x 2.3" x 1.2"

Notes: 0 dBu = 0.775 Vrms.
All noise measurements are unweighted, 20 - 20,000 Hz bandwidth.
All specifications are subject to change without notice.