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RDL STM-2 Adjustable Gain Microphone Preamplifier
RDL STM-2 Adjustable Gain Microphone Preamp
$216.93

RDL STM-2 Adjustable Gain Microphone Preamp

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SoundPro Item: 71826
MPN: STM-2
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  • RDL STM-2 Adjustable Gain Microphone Preamplifier
MSRP: $234.88
$216.93
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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.

RDL STM-2 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
  • STM-2 adjustable gain microphone preamplifier1
  • Input500 Ω balanced; 5 kΩ unbalanced
  • Phantom24 Vdc; IEC 61938: 2013, Filtered
  • Outputs (2)+4 dBu 150 Ω balanced; -10 dBv unbalanced
  • Frequency Response50 Hz to 30 kHz (± 1.5 dB)
  • GainAdjustable 35 to 65 dB
  • THD+N<0.05% (50dB gain)
  • CMRR>50 dB (50 Hz to 20 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 Input24 to 33 Vdc @ 10 mA maximum
  • Power RequirementGROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
  • Dimensions (HxWxD)0.7" x 3" x 1.6"

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