Sonifex RB-UL4 Quad Unbalanced to Balanced Converter

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Product Information

Sonifex RB-UL4 Quad Stereo Unbalanced to Balanced Converter

The RB-UL4 is a 1U rack-mount quad stereo unit for interfacing domestic or semi-professional unbalanced equipment to professional balanced line levels.

All connections are on the rear panel. The eight RCA unbalanced inputs have an impedance of 10kΩ and are routed to eight balanced XLR-3 outputs with an output impedance of <50Ω.

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

  • Rack mounted quad stereo unit
  • Output gain can be individually adjusted for left and right channels
Maximum Inpput Level+28dBu
Maximum Output Level+28dBu
Input Impedance>10kΩ
Output Impedance<50Ω
Distortion0.01% THD @ 1kHz, ref +8dBu output
Noise-100dB, unity gain, ref +8dBu output
Frequency Response20Hz to 20kHz ±0.1dB (600Ω load, ref 1kHz)
Gain RangeBalanced output : -15dBu to +15dBu, ref -15dBu into unbalanced RCA input
Inputs 8 x RCA phono (Unbalanced)
Outputs 8 x XLR 3 pin male (Balanced)
Mains Input Filtered IEC, switchable 110-120V, or 220-240V, fused, 6W max
Fuse RatingAnti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)
RB-UL4Quad stereo unbalanced to balanced converter
Dimensions (Raw)48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed)58.5cm (W) x 22.5cm (D) x 7cm (H)
23” (W) x 8.9” (D) x 2.8” (H)
WeightNett: 1.3kg Gross: 1.9kg
Nett: 2.9lbs Gross: 4.2lbs