RDL STM-DA3 - 1 x 3 Microphone Distribution Amplifier

RDL STM-DA3 - 1 x 3 Microphone Distribution Amplifier

RDL STM-DA3 - 1 x 3 Microphone Distribution Amplifier

RDL STM-DA3 - 1 x 3 Microphone Distribution Amplifier

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RDL STM-DA3 overview

  • 1Description

The STM-DA3 from RDL is a compact and portable microphone distribution amplifier designed for use in broadcast and recording applications. Part of RDL's "stick-on" series, the STM-DA3 is perfect for use in a studio or out in the field and comes with adhesive for permanent or removable mounting. Built on the electrical architecture of RDL's mic preamps, the STM-DA3 provides excellent audio quality with very low self-noise, suitable for any professional application.

Featuring a 1.2 k ohm balanced input, the STM-DA3 accepts a wide variety of mic input levels without loading low-impedance microphones. Phantom power can be supplied when the supply voltage is connected to the "PHM" screw terminal. A multi-turn trimmer allows you to adjust the gain to match microphone levels.

The three balanced outputs provide full audio isolation. A dual LED VU meter shows green over a 15dB range and goes to red when the optimum operating level is exceeded. These professional features tucked neatly into such a portable package make the STM-DA3 a must when you need to feed one microphone into 3 mic inputs.

Sends one mic signal to three balanced outputs
Ultra-clean audio with low self-noise and distortion
Electrical and audio isolation
Compact and portable
Mounting adhesive included
Dual LED VU meter
Phantom power available
Accepts a wide variety of microphone signals
UPC: 813721011039
In the Box
RDL STM-DA3 - 1 x 3 Microphone Distribution Amplifier
  • Mounting Adhesive
  • 3 Year Limited Warranty
  • Table of Contents
    • 1Description

    RDL STM-DA3 specs

    Input 1 x Screw Terminal (1.2 k ohms Balanced)
    Outputs 3 x Screw Terminals (-45 dBu, 150 ohm Balanced)
    Gain Range 17 dB (Adjustable, 25-Turn Trimmer)
    Frequency Response 30Hz - 20kHz (+/- 0.2dB)
    THD + N < 0.1%
    IMD < 0.1%
    Noise < 80 dB (Below -50 dBu Output, -50 dBu Input)
    Headroom > 20 dB (-50 dBu Output, -45 dBu Input)
    Common Mode Rejection Ratio > 60 dB (100Hz - 5kHz)
    Output Isolation > 135 dB (Balanced Audio)
    > 150 dB (Common Mode)
    Power Requirements 24 - 33 VDC @ 40 mA (Ground-Referenced)
    Dimensions Not Specified by Manufacturer
    Weight Not Specified by Manufacturer
    Packaging Info
    Package Weight 0.2 lb
    Box Dimensions (LxWxH) 3.9 x 2.1 x 2.0"

    RDL STM-DA3 reviews

    STM-DA3 - 1 x 3 Microphone Distribution Amplifier is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Outstanding performance! I've always loved using these in radio, so when I had to build a microphone distribution amp, this was my first and only choice.
    Date published: 2016-11-16
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