• RDL STM-2 Adjustable Gain Microphone Preamplifier
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RDL STM-2 Adjustable Gain Microphone Preamp

RDL STM-2 Adjustable Gain Microphone Preamp

SoundPro Item: 71826 | Part Number: 001-0015

$211.63
$282.18 $211.63
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MSRP: $282.18 | MAP: $211.63

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  • 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
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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.

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Specifications

Dimensions
Dimensions (HxWxD)
0.7x3x1.6"
Electrical
Phantom
24 Vdc; IEC 61938: 2013, Filtered
THD+N
<0.05% (50dB gain)
Phantom Power Input
24 to 33 Vdc @ 10 mA maximum
Power Requirement
GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
Audio
Frequency Response
50 Hz to 30 kHz (± 1.5 dB)
Connectivity
Input
500 Ω balanced; 5 kΩ unbalanced
Outputs (2)
+4 dBu 150 Ω balanced; -10 dBv unbalanced
Construction
Gain
Adjustable 35 to 65 dB
General
Residual Noise
< -70 dB (below +4 dBu; 150 Ω source @ 50 dB gain)
Headroom
> 20 dB (24 Vdc supply); > 14 dB (12 Vdc supply)
Audio Performance
CMRR
>50 dB (50 Hz to 20 kHz)

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