Overview
The RB-UL4 is a versatile 1U rack-mount unit designed for connecting unbalanced equipment to professional balanced line levels. Its compact size makes it suitable for use in both domestic and semi-professional settings, and all connections are conveniently located on the rear panel.
The unit features eight RCA unbalanced inputs with an impedance of 10kΩ, which are then routed to eight balanced XLR-3 outputs with an output impedance of <50Ω. The output gain for each channel can be easily adjusted using pre-set potentiometers accessible through the rear panel, providing precise control over the audio signal. With its user-friendly design and high-quality performance, the RB-UL4 is a valuable tool for any audio setup.
About the Sonifex RB-UL4
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.
Maximum Input Level +28dBu
Input Impedance 10kohms
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
Audio Inputs 8 x RCA phono (unbalanced)
Audio Outputs 8 x XLR 3 pin male (balanced)
Mains Input Filtered IEC, 110-120V, or 220-240V, fused
Weight Nett 1.3kg
Gross 1.9kg
Dimensions Raw 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Boxed 53cm (W) x 20.5cm (D) x 6cm (H)
