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Illustrative image of: RDL STM-2: Preamps: STM2

Radio Design Labs STM-2

RDL

BSW PART:
STM2

Mic Preamp

More Preamps More RDL
$205.47 $273.96
You save $68.49

The STM-2 is a quality low-noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from 35 to 65 dB, two balanced or unbalanced outputs, and available phantom supply input. Its ultra-low distortion and lownoise performance make it the best choice, even when larger preamps could be used. The STM 2 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.

$205.47 $273.96
You save $68.49

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  • Main Features:
  • Low-Noise Mic Preamp
  • Adjustable Output Level
  • High or Low Impedance Mic Inputs
  • Mic Input to 2 Line Outputs
  • Two Balanced or Unbalanced Outputs
  • Phantom Capability
  • RF-Filtered Inputs
  • 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: Adjustable 35 to 65 dB
  • THD+N:< 0.05% (50 dB Gain)
  • 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)
  • Power Requirement: GROUND-REFERENCED, 24 Vdc @ 25 mA
  • Ambient Operating Environment:0° C to 55° C