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Illustrative image of: RDL STM-1: Preamps: STM1

Radio Design Labs STM-1

RDL

BSW PART:
STM1

Mic Preamp

More Preamps More RDL
$154.46 $205.95
You save $51.49

The STM-1 is a low-cost quality microphone preamplifier designed for use in commercial sound and broadcast applications. The compact size makes it ideal where a larger or heavier preamp cannot be used. The high-performance circuit provides a fixed 50 dB gain to bring any mic-level signal up to the line-level range of nearly any line input. The STM-1 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. For intercom applications, the input will operate directly from a speaker.

PS24AS power supply not included.

$154.46 $205.95
You save $51.49

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  • Main Features:
  • High or Low Impedance Input Mic Preamp
  • Fixed 50 dB Gain for Consistency
  • Balanced or Unbalanced Output
  • Phantom Capability
  • RF-Filtered Inputs and Outputs
  • Excellent Performance
  • STICK-ON Convenience
  • Specifications:
  • Input: 500 Ω balanced; 5 kΩ unbalanced
  • Phantom:24Vdc; IEC 1938: 1996-12, Filtered
  • Outputs (2): +4 dBu 150 Ω balanced; -10dBv unbalanced
  • Frequency Response: 50 Hz to 20 kHz (+/- 1.5 dB)
  • Gain: 50 dB nominal
  • THD+N: < 0.05%
  • CMRR: > 60 dB (50 Hz to 30 kHz)
  • Residual Noise: < -70 dB (below +4 dBu; 150 Ω source @ 50 dB gain)
  • Headroom: > 20 dB (24 Vdc supply); > 14 dB (12 Vdc supply)
  • Phantom Power Input:24 Vdc @ 10 mA maximum
  • Power Requirement: GROUND-REFERENCED, 24 Vdc @ 25 mA
  • Ambient Operating Environment:0° C to 55° C