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Sonifex RB-BL4 Dual Stereo Bi-Directional Amp

Matching Amplifier

Sonifex RB-BL4 Dual Stereo Bi-Directional Amp

Sonifex RB-BL4 Dual Stereo Bi-Directional Amp

Matching Amplifier

SKU: 19034

Cat no: 6015

  • bi-directional stereo unit
  • domestic or semi-pro
  • four unbalanced RCA (phono) outputs
  • Four RCA unbalanced inputs
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Estimated Delivery 1 to 2 days

£305.00 (ex vat) £366.00 (incl vat)

The RB-BL4 is a dual bi-directional stereo unit for interfacing domestic or semi-pro unbalanced equipment to professional balanced line levels, and vice versa.

The four XLR-3 electronically balanced inputs have an impedance of 20 kohms bridging and are routed to four unbalanced RCA (phono) outputs with an output impedance of The four RCA unbalanced inputs have an impedance of 20 kohms and are routed to four balanced XLR-3 outputs with an output impedance of All connections are on the rear panel. The output gain can be adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.

Product Specification

Maximum Input Level +28dBu

Maximum Output Level +28dBu

Input Impedance (RCA) 10kohms unbalanced

Input Impedance (XLR) 20kohms balanced bridging

Output Impedance (RCA)
Output Impedance (XLR)
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 (600ohm load, ref 1kHz)

Gain Range Unbalanced Output : -28dBu to +15dBu, ref -15dBu into balanced XLR input

Balanced Output : -15dBu to +15dBu, ref -15dBu into unbalanced RCA input

Connections

Audio Inputs 4 x RCA phono (unbalanced), 4 x XLR 3 pin female (balanced)

Audio Outputs 4 x XLR 3 pin male (balanced), 4 x RCA phono (unbalanced)

Mains Input Filtered IEC, switchable 110V-120V, or 220-240V, fused, 6W max

Physical Specification

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)

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