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RDL STM-2 Adjustable Gain 1-Channel Low-Noise Microphone Preamplifier with Dual Outputs, 35 to 65 dB Gain

SKU: RDSTM2 MFR: STM-2
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Key Features

  • Achieve pristine audio with this low-noise microphone preamplifier for studio recordings.
  • Adjustable gain from 35 to 65 dB ensures optimal signal levels for any microphone.
  • Dual outputs offer balanced & unbalanced connections, maximizing your setup flexibility.
  • Perfect for broadcast, podcasting, & voice-over work, get clear, professional sound.
  • Compact design integrates seamlessly into any studio, offering high-quality gain.
  • Exceptional CMRR & frequency response deliver detailed, accurate microphone preamplification.
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Special Order?Estimated to Ship: 08/12/2025
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RDL STM-2 Specifications

  • Input

    500 Ohms balanced; 5 kOhms unbalanced

  • Phantom

    24 Vdc; IEC 61938: 2013, Filtered

  • Outputs (2)

    +4 dBu 150 Ohms 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 Ohms source at 50 dB gain)

  • Headroom

    > 20 dB (24 Vdc supply); > 14 dB (12 Vdc supply)

  • Phantom Power Input

    24 to 33 Vdc at 10 mA maximum

  • Power Requirement

    GROUND-REFERENCED, 24 to 33 Vdc at 25 mA

  • Ambient Operating Environment

    0 to 55 deg. C (32 to 131 deg. F)

  • Dimensions (HxWxD)

    0.7 x 3 x 1.6" (1.78 x 7.62 x 4.06cm)

  • UPC Code

    813721011053

About RDL STM-2

The STM-2 Adjustable Gain 1-Channel Low-Noise Microphone Preamplifier with Dual Outputs is a professional-grade audio equipment designed for high-quality sound production in commercial sound, broadcast, and recording environments. This versatile preamplifier boasts an adjustable gain range from 35 to 65 dB, offering precise control over your audio signal for optimal sound quality.

Equipped with two balanced or unbalanced outputs, the STM-2 provides enhanced flexibility in routing your audio signal to various devices, making it a practical choice for diverse audio setups. It also features a phantom supply input, further expanding its compatibility with different audio equipment.

The STM-2 stands out for its ultra-low distortion and low noise performance, ensuring a clean, clear, and high-quality audio output. This makes it an ideal choice even in situations where larger, more complex preamps could be used.

Operating from a single-ended 24 Vdc supply input, the STM-2 is designed for efficient performance. It can also operate from 12 Vdc with a slight 6 dB reduction in headroom, providing flexibility in power options. Each output is designed to drive high or low impedance loads, catering to a wide range of audio equipment and setups.

In summary, the STM-2 Adjustable Gain 1-Channel Low-Noise Microphone Preamplifier with Dual Outputs is a robust, versatile, and high-performing audio solution for professionals seeking superior sound quality and flexibility in their audio equipment.

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

Key Features

  • Achieve pristine audio with this low-noise microphone preamplifier for studio recordings.
  • Adjustable gain from 35 to 65 dB ensures optimal signal levels for any microphone.
  • Dual outputs offer balanced & unbalanced connections, maximizing your setup flexibility.
  • Perfect for broadcast, podcasting, & voice-over work, get clear, professional sound.
  • Compact design integrates seamlessly into any studio, offering high-quality gain.
  • Exceptional CMRR & frequency response deliver detailed, accurate microphone preamplification.

What's in the box:

  • RDL STM-2 Adjustable Gain 1-Channel Low-Noise Microphone Preamplifier
  • RDL 3 Year Limited Warranty