Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box
details

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Fast Economical International Shipping
Markertek makes it EASY for our international customers to get their orders!

At check-out you can view our very affordable international shipping rates that are ALL-INCLUSIVE with your GUARANTEED LANDED COST and NO SURPRISE FEES!

*Economy International Shipping delivery time is approximately 7-14 days. Economy International Shipping is available to select countries. Not all products are eligible.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers





Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

 
close - X

Learn More About the RDL STM-2X

 
RDL STM-2X Switched Microphone Preamplifier - 35 to 65 dB Gain
     
    Questions? Ask a Markertek Expert:
    800-522-2025 Email

    RDL STM-2X Switched Microphone Preamplifier - 35 to 65 dB Gain

    Manufacturer: Radio Design Labs

    Item #: STM-2X   •   MFG #: STM-2X

     

    List Price:$224.17
    Our Price:$158.49

    free ship
     
     
    Availability: In Stock
    i
    Item is Available for immediate shipping from our warehouse.
     
     
       

      Share!

       
       
       

      Required Accessories

      The RDL STM‑2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle‑type switch or push‑to‑talk switch is to be provided for microphone control, particularly if condenser microphones are used.

      Required Power Supply RDL PS24V Sold Separately

       
      • Features

        • Quiet Switching of Condenser Microphone
        • Remote Microphone Soft‑Switching
        • Switch a Mic‑Level Source to a Mic or Line Level Output
        • Remote Toggle Switch or Push‑to‑Talk Button
        • Adjustable Preset Gain on Microphone Source
         
      • Specifications

        • Input: 500 Ω balanced; 5 kΩ unbalanced
        • Phantom: 24Vdc; IEC 1938: 1996‑12, Filtered
        • Outputs (2):
          - Line Level: +4 dBu 150Ω balanced
          - Mic Level: ‑45 dBu 150Ω balanced
        • Headroom: > 20 dB
        • Gain:
          - Line Level Output: Adjustable 35 to 65 dB
          - Mic Level Output: Adjustable ‑15 to 15 dB
        • Frequency Response: 50 Hz to 20 kHz (+/‑1 dB)
        • THD+N: < 0.05% (50 dB gain)
        • Residual Noise ON: < ‑70 dB (below to +4 dBu; 150 Ω source @ 50 dB gain)
        • OFF Attenuation:
          > 100 dB (1 kHz)
          > 80 dB (50 Hz to 20 kHz)
        • Switch Control Input: Connect to ground to activate signal; 0.5 mA maximum current required
        • Switching Time: < 5 ms (soft‑switching transition on or off)
        • CMRR: > 60 dB (50 Hz or 20 kHz)
        • 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
         
       
       

      Add Accessories for your STM-2X:

       
       
       
      Please fill out the information below
      Email Address*