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Forssell Technologies SMP - 2A Stereo Preamp

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The Forssell Technologies Inc SMP-2A is a 2 channel, transformerless, Class A discrete JFET microphone preamplifier housed in a single space rack chassis. Each channel on the SMP-2A has front panel mounted controls for gain, output muting, polarity reverse, and phantom power on/off. The mute, polarity, and phantom power switches each have LED indicators which illuminate when the switch is pressed in to indicate that the switch is on. The gain control is variable from minimum to maximum gain in 24 stepped positions. Bicolor LED level indicators are also present for each channel. These LED indicators show green with the output signal level is above –5 dBu, and red when the signal level reaches +24 dBu, which is 2-3 dB prior to clipping.


Serial Number: 235

Minimum Gain = +6 dB

Maximum Gain = +68 dB or +74 dB (optional)

Input Impedance = 13k ohms

EIN (Max gain) = better than –128 dBu (22 Hz to 22 KHz, unweighted), typically –130 dBu

CMRR (measured at +45 dB gain) = better than 90 dB

Frequency Response = 5 Hz to 100 Khz +0, -0.5 dB

THD +N = better than .005%

Maximum Output Level >= +27 dBu

Recommended Load Impedance >= 600 ohms

Preamp Output Impedance = 10 ohms

Power consumption = appox 13 watts 

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Discount Price: $1,500.00

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