The Forssell Technologies SMP-500 is a version of the well-known SMP-2 microphone preamplifier, adapted to work with the API 500 series enclosures.
This extremely high-quality, sonically neutral microphone preamplifier is designed for the most demanding applications.
SMP-500 circuitry features an all Class A discrete JFET front-end with a gain range of +8 to +64 dB in 24 switched steps.
The output of the SMP-500 is fully balanced and floating, with a maximum output level of greater than +26 dBu.
Front panel LED signal level indicators are provided to indicate 0 dBu output level (green) and output clipping (red). The clipping LED lights at +24 dBu output, which is about 2 dB before actual clipping.
Polarity invert and P48 Phantom power switches with LED status indicators are also located on the front panel.
Gain Range = +8 to +64 dB in 24 steps
Frequency Response @ 45 dB gain from1 Hz to 200 KHz = +0, -0.5 dB
EIN at +65 dB gain (22 Hz to 22 KHz) better than -127 dBu unweighted
Input Impedance = 13k ohm
Max Input Level at min gain = +18 dBu (output clipping)