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Sonifex RB-HD2 - Dual Stereo Headphone Amplifier (1U)

£257.18 £214.32 (ex. vat)

Sonifex RB-HD2

  • Sonifex RB-HD2  Dual Stereo Headphone Amplifier (1U)
  • Sonifex RB-HD2
  • Sonifex RB-HD2
  • Sonifex RB-HD2 Rear

Sonifex RB-HD2

The Sonifex RB-HD2 is a high performance 2-way stereo headphone distribution amplifier for driving up to 2 pairs of professional stereo headphones from a single stereo or mono input. A switch on the rear panel enables the distribution of a mono signal to all four outputs (i.e. both earpieces of a pair of stereo headphones) via the left channel input. The stereo/mono switch is located on the rear panel to prevent accidental knocking.

The XLR-3 inputs are electronically balanced and can be wired unbalanced. There are two pre-set controls on the rear panel that adjust the level of the master input signal to the outputs. Each output is on a ¼” stereo jack socket and is designed to drive 150mW into 32 ohm to 600 ohm stereo headphones. The outputs are individually buffered with their own front panel volume control. A LED power indicator on the front panel displays the power supply connection.

Sonifex RB-HD2 Specifications

Audio Specification

  • Input impedance: >20kΩ balanced bridging (main)
  • Max Input Level: +28dBu
  • Input Gain Range: -12dB to +20dB gain (pre-set pots)
  • Output Level: Drives 150mW into 32Ω to 600Ω headphones
  • Volume Controls: -80dB to +11dB gain   


  • Main Stereo Inputs: 2 x XLR 3 pin female (balanced, can be unbalanced)
  • Outputs: 2 x ¼” (6.35mm) A-gauge 3-pole stereo jack sockets
  • Mains Input: Filtered IEC, switchable 110-120V, or 220-240V, fused, 9W max
  • Fuse Rating:
    • Anti-surge fuse 100mA 20 x 5mm (230VAC)
    • Anti-surge fuse 250mA 20 x 5mm (115VAC)      

Physical Specification

  • Dimensions:
    • 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
    • 19” (W) x 4.3” (D) x 1.7” (H) (1U)
  • Weight:
    • Nett: 1.35kg Gross: 2.0kg
    • Nett: 3lbs Gross: 4.4lbs
Manufacturer Sonifex
Model RB-HD2
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