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


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

In stock

UPC: nan SKU: STA-1M Category: Brand:


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


Sold Separately


  • 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


  • 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

Additional information

Weight 0.25 lbs


There are no reviews yet.

Be the first to review “RDL STA-1M Audio Line Amplifier – Mono: -14 to 14 dB Gain”

Your email address will not be published. Required fields are marked *