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RDL STA-1M Audio Line Amplifier - Mono: -14 to 14 dB Gain
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    RDL STA-1M Audio Line Amplifier - Mono: -14 to 14 dB Gain

    Manufacturer: Radio Design Labs

    Item #: STA-1M   •   MFG #: STA-1M


    List Price:$149.28
    Our Price:$105.95

    free ship
    Availability: Usually ships in 3-10 business days
    This item is currently out of stock and will ship the minute we receive it – typically 3-10 business days. Need it sooner? Expedited delivery options may be available. Email or call customer service at 800-522-2025 and we’ll make it happen.



      Required Accessories

      The STA-1M allows bridging any audio line, adjusting the gain, and driving a balanced or unbalanced line. The circuit design allows the input to accept either balanced or unbalanced signals, of either high or low impedance. This is an instrumentation type input stage which will amplify the differential input, regardless of ground reference. The output is capable of driving either high or low impedance loads, and the output may be connected either balanced or unbalanced.

      RDL's SupplyFlex power input configuration is included in the STA-1M. The power supply input may be fed from a floating (not ground-referenced) 24 Vdc power source, from a bipolar power supply (+/ 12 Vdc or +/-15 Vdc) or from a ground-referenced 24 Vdc power supply.

      Required Power Supply RDL PS24V Sold Separately

      • Features

        • Single-Channel Audio Line Amplifier
          Balanced or Unbalanced Inputs and Outputs
          Bridge a Line to Avoid Loading
          High to Low Impedance Conversion
          Low to High Impedance Conversion
          Instrumentation Input to Isolate Ground Loops
          Precisely Match Audio Levels
          RDL SupplyFlex Power Input Configuration
      • Specifications

        • Input: 10 kΩ balanced or unbalanced bridge
          Outputs (2): 150 Ω balanced to drive low or high‑Z; 75 Ω unbalanced
          Output Signal: +4 dBu (nominal, adjustable)
          Frequency Response: 10 Hz to 20 kHz (+/‑0.25 dB)
          THD+N: < 0.05%
          Headroom above +4 dBu: > 18 dB
          CMRR: > 50 dB at full gain (100 Hz)
          Gain: Adjustable per chart below
          Unbal. Balanced : ‑7 dB +14 dB
          Bal. Balanced: ‑7 dB +14 dB
          Bal. Unbalanced: ‑14 dB +7 dB
          Unbal. Unbalanced:‑14 dB +7 dB
          Power Requirement: GROUND‑REFERENCED or FLOATING, 24 to 33 Vdc @ 50 mA
          Ambient Operating Environment: 0¡ C to 55¡ C

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