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Microphone Preamplifier

STM-2

Adjustable Gain Microphone Preamplifier - 35 to 65 dB Gain

SKU: STM-2
  • 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
Datasheet
Recommended Power Supply ( Not Included )
PS-24AS (USA)PS-24AX (International)
TAA Compliant
Category:

Description

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.

Specifications

Input:500 Ω balanced; 5 kΩ unbalanced
Phantom:24 Vdc; IEC 61938: 2013, Filtered
Outputs (2):+4 dBu 150 Ω balanced; -10 dBv unbalanced
Frequency Response:50 Hz to 30 kHz (± 1.5 dB)
Gain:Adjustable 35 to 65 dB
THD+N:< 0.05% (50 dB 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 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
Dimensions:Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
Package Type:Cardboard Box
WEEE weight:0.145 lbs.
Shipping Weight:0.195 lbs.
Tariff code:8543.70.9860
Package Dimensions:2 x 2 x 4 in.

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Dimensions

STM-2

Downloads

DocumentsFormat
Datasheet PDF
CAD FilesUnitsFormat
Engineering Functional Block American DXF
Panel Diagram - End American DXF
Panel Diagram - Front American DXF
Panel Diagram - End Metric DXF
Panel Diagram - Front Metric DXF
High Res ImagesFormat
stm-2.zip TIF
Declaration of Conformity
Download

Diagrams

Where To Buy

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  • Must be an A/V contractor, sound contractor or system integrator
  • Must possess a current resale certificate for your state
Click here to submit a new direct dealer account inquiry

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Microphone Preamplifier
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