Sonifex RB-UL2 Unbalanced to Balanced Dual Converter

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Product Code: 3467
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Sonifex RB-UL2 Unbalanced to Balanced Dual Converter

Sonifex RB-UL2 Unbalanced to Balanced Dual Converter



The RB-UL2 is a dual stereo unit for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels.


The four RCA unbalanced inputs have an impedance of 10kohms and are routed to four balanced XLR-3 outputs with an output impedance of <50ohms.


The output gain can be individually adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.




  • Maximum Input Level: +28dBu
  • Input Impedance: 10 kohms
  • Maximum Output Level: +28dBu
  • Output Impedance: <50ohms
  • Distortion: 0.01% THD @ 1kHz, ref +8dBu output
  • Noise: -100dB, unity gain, ref +8dB output
  • Common Mode Rejection: >66dB typically
  • Frequency Response: 20Hz to 20kHz +/- 0.1dB (600 ohm load, ref 1kHz)
  • Gain Range: Balanced out -15dBu to +15dBu, ref -15dBu into unbalanced input
  • Connections
  • Audio Inputs
    4 x RCA phono (unbalanced)
  • Audio Outputs
    4 x XLR 3 pin male (balanced)
  • Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
  • Physical Specification
  • Weight
    Nett: 1.05kg
    Gross: 1.5kg
  • Dimensions
    Raw: 28cm (W) x 10.8cm (D) x 4.2cm (H)
    Boxed: 36cm (W) x 20.5cm (D) x 6cm (H)

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