Overview
The RB-HD2 is a powerful headphone distribution amplifier that can drive up to 2 pairs of professional stereo headphones from a single input. It features a switch on the rear panel that allows for the distribution of a mono signal to all four outputs, making it easy to use with different types of headphones. The stereo/mono switch is conveniently located on the rear panel to prevent accidental changes.
The XLR-3 inputs on the RB-HD2 are electronically balanced and can be wired unbalanced. It also has two pre-set controls on the rear panel for adjusting 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 and have their own front panel volume control. Additionally, a LED power indicator on the front panel displays the power supply connection for easy monitoring.
Summary
Accessory Type: Audio
About the Sonifex RB-HD2 Amplifier
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 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.
Audio
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
Connections
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)
Dimensions (WxDxH) 48.0 cm x 10.8 cm x 4.2 cm
Boxed Dimensions (WxDxH) 53.0 cm x 20.5 cm x 6. cm
Weight 1.35 kg
Boxed Weight 2.00 kg
