Sonifex RB-UL1 Unbalanced to Balanced Converter

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£323.94 £269.95
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Product Information

Sonifex RB-UL1 Unbalanced to Balanced Converter

The RB-UL1 is a single stereo unit for interfacing domestic, or semi-pro unbalanced equipment to professional balanced line levels.

The two RCA unbalanced inputs have an impedance of 10kohms and are routed to two balanced XLR-3 outputs with an output impedance of The output gain can be individually adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.

  • Compact Unit
  • Lightweight
  • 2 x RCA Unbalanced Inputs
  • 2 x Balanced XLR Outputs


Maximum Input Level+28dBu
Input Impedance>10kohms
Maximum Output Level+28dBu
Distortion0.01% THD @ 1kHz, ref +8dBu output
Noise100dB, unity gain, ref +8dB output
Common Mode Rejection>66dB typically
Frequency Response20Hz to 20kHz +/- 0.1dB (600 ohm load, ref 1kHz)
Gain Range Balancedout -15dBu to +15dBu, ref -15dBu into unbalanced input
Audio Inputs2 x RCA phono (unbalanced)
Audio Outputs2 x XLR 3 pin male (balanced)
Mains Input Filteredswitchable 110-120V, or 220-240V, fused, 6W max
Net Weight1.0kg
Gross Weight1.45kg
Dimensions Raw28cm (W) x 10.8cm (D) x 4.2cm (H)
Dimensions Boxed36cm (W) x 20.5cm (D) x 6cm (H)