Stereo Audio Format Converter

  • Unparalleled Audio Performance
  • Unbalanced to Balanced Audio Conversion
  • Additional Summed MONO Out
  • Switch-Selectable Ground Lift for XLR Output Jacks
  • Balanced to Unbalanced Audio Conversion
  • Unbalanced RCA Connections on Front Panel
  • Balanced XLR Connections on Front Panel
  • Balanced Connections on Rear Panel Detachable Terminal Blocks
  • Front-Panel Multi-Turn LEVEL Trimmers
  • Dual-LED VU Meter for Each Channel
  • Gold-Plated Connectors
  • Exceptional Headroom and Frequency Response
  • 1/3 Rack, High Density Rack Mounting
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)


    The RU-AFC2 is a stereo bi-directional audio format converter. The bi-directional format allows the RU-AFC2 to fully convert the stereo input and stereo output of a consumer audio product to professional balanced standards. It can equally convert the stereo input and stereo output of a professional audio product to consumer unbalanced standards. The audio fidelity, low noise, low distortion and excellent crosstalk performance of the RU-AFC2 are ideally suited to the most critical applications. The RU-AFC2 has been carefully engineered in meticulous detail to provide the ultimate audio interface package available.

    Unbalanced audio connections are available on front-panel RCA jacks. Balanced audio connections are available on front-panel XLR jacks and on rear-panel detachable terminal blocks. The shield connections of the XLR output jacks are connected to the case through a rear-panel ground-lift switch. The unbalanced to balanced section includes an additional MONO summed output on a rear-panel detachable terminal block which may be wired balanced or unbalanced. The mono output may be used to drive patch-bay jacks, powered monitors or subwoofer amplifiers.

    Each of the left and right outputs is equipped with a dual-LED VU-meter. The intensity of the green LED is proportional to the audio level. The red LED flashes at the calibrated output level, -10 dBV unbalanced or +4 dBu balanced. An individual multi turn level trimmer is provided on the front panel for each output channel.

    The RU-AFC2 operates from ground-referenced 24 Vdc. Use the RU-AFC2 individually, or combine it with other RDL products as part of a complete audio/video system.


    Unbal to Bal Section:(Referred to ‑10 dBV input feeding +4 dBu)
    Inputs (2):Unbalanced line‑level, +25 dBV max.
    Input Connectors (2):RCA Phono jack (left and right)
    Outputs (3):+4 dBu balanced (left, right, mono sum), +25 dBu max.
    Output Connectors (4):XLR (2) and/or detachable terminal block (left and right); detachable terminal block (mono sum)
    Gain adjustment:-25 dB to +9 dB (rel. +4 dBu)
    Frequency Response:10 Hz to 150 kHz (+/‑ 0.25 dB)
    THD+N:< 0.005%
    Noise:< ‑90 dB (below +4 dBu)
    Crosstalk:< ‑80 dB (20 Hz to 20 kHz)
    Headroom:> 20 dB
    Bal to Unbal Section:(Referred to +4 dBu input feeding ‑10 dBV)
    Inputs (2):Balanced line‑level, +25 dBu max.
    Input Connectors (3):XLR (2) or detachable terminal block (left and right)
    Outputs (2):-10 dBV unbalanced (left and right), +17 dBV max.
    Output Connectors (2):RCA Phono jack (left and right)
    Level adjustment:‑28 dB to +5 dB (rel. -10 dBV)
    CMRR:> 80 dB (50 to 120 Hz)
    Frequency Response:10 Hz to 150 kHz (+/‑ 0.25 dB)
    THD+N:< 0.001%
    Noise:< ‑100 dB (below ‑10 dBV)
    Crosstalk:< ‑90 dB (10 Hz to 20 kHz)
    Headroom:> 20 dB
    Ambient Operating Environment:0° C to 55° C
    Power Requirement:GROUND‑REFERENCED, 24 Vdc @ 60 mA (idle), 100 mA (max)
    Package Type:Cardboard Box
    Tariff code:8543.70.9860
    WEEE weight:1.285 lbs.
    Package Dimensions:6 x 6 x 2.625 in.
    Shipping Weight:1.53 lbs.

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    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - RearAmericanDXF
    Panel Diagram - FrontMetricDXF
    Panel Diagram - RearMetricDXF
    High Res ImagesFormat
    Declaration of Conformity


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