Sonifex CM-MS3 Original price was: €315.Current price is: €295.
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Sonifex RB-HD6 Original price was: €595.Current price is: €565.

Sonifex RB-HD2

SKU: 105492

Original price was: €420.Current price is: €395.


Sonifex RB-HD2

Dual Stereo Headphone Amplifier

Broadcasters Warehouse -The 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 ohms 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.

RB-HD2 Diagram

RB-HD2 Block Diagram.

Technical Specification For RB-HD2

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 32 Ω to 600 Ω headphones
Volume Controls: -80dB to +11dB gain


Main Stereo Inputs: 2 x XLR 3 pin female (balanced, can be unbalanced)
Outputs: 2 x ¼” (6.35 mm) 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 × 5 mm (230VAC)
Anti-surge fuse 250mA 20 × 5 mm (115VAC)

Equipment Type

RB-HD2: Dual stereo headphone amplifier

Physical Specification

Dimensions (Raw): 48 cm (W) x 10.8 cm (D) x 4.2 cm (H) (1U)
19” (W) x 4.3” (D) x 1.7” (H) (1U)
Dimensions (Boxed): 53 cm (W) x 20.5 cm (D) x 6 cm
21” (W) x 8” (D) x 2.4”
Weight: Nett: 1.35 kg Gross: 2.0 kg
Nett: 3lbs     Gross: 4.4lbs