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High Gain Microphone Preamplifier - 35 to 75 dB gain

High Gain Microphone Preamplifier - 35 to 75 dB gain

Part #: STM-3   Manufacturer: Radio Design Labs

Price: $140.41
Retail: $204.49
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Product Description

The STM-3 is a quality low-noise microphone preamplifier designed for use in surveillance, commercial sound, broadcast, and recording where higher than normal gain is required. The STM-3 is very flexible, with gain adjustment from 45 to 75 dB, two balanced or unbalanced outputs, and available phantom supply input. Its low-distortion and low-noise performance make it the best choice, even when larger preamps could be used. The single-ended supply input range is from 24 to 33 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.

Input: 500 Ω balanced; 5 kΩ unbalanced
Phantom:24Vdc; IEC 1938: 1996-12, Filtered
Output (2): +4 dBu 150 Ω balanced; -10 dBV unbalanced
Frequency Response: 50 Hz to 25 kHz (+/- 1 dB)
Gain: Adjustable 45 to 75 dB
THD+N: < 0.05% (50 dB gain)
CMRR: > 60 dB (50 Hz to 20 kHz)
Residual Noise:< -70 dB (below +4 dBu, 150 Ω source)
Headroom: > 20 dB (24 Vdc supply); 14 dB (12 Vdc supply)
Phantom Power Input:24 to 33 Vdc @ 10 mA maximum
Power Requirement: GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
Ambient Operating Environment:0° C to 55° C

Additional Information

Manufacturer: Radio Design Labs
Part#: STM-3
Unit: Each
Carton: 1
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