Product Description

The RB-HD1 is a 1U rack-mount stereo headphone amplifier for driving up to two pairs of professional stereo headphones from a single stereo or mono input. One headphone socket is on the front panel with one on the rear. The main stereo input uses electronically balanced XLR-3 connectors on the rear panel, which can be wired un-balanced. The output volume for the headphones can be controlled either by a pot situated on the front panel or a VCA signal supplied externally via the remote connector.

A mono input can be mixed into the main headphone feed, for example, for mixing in talkback to the headphones. This has an input level control via a recessed adjustable potentiometer. The mono mix input can also be controlled remotely. A stereo/mono switch is recessed on the rear panel to prevent accidental knocking. With mono selected, audio is sent to both left and right ear pieces. A LED power indicator on the front panel displays the power supply connection.

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Additional Information

Input impedance:

>20kΩ balanced bridging (main)

Output Level:

Drives 150mW into 32Ω to 600Ω headphones

Main Stereo Inputs:

2 x XLR 3 pin female (balanced, can be unbalanced)


2 x ¼” (6.35mm) A-gauge 3-pole stereo jack sockets


48cm (W) x 10.8cm (D) x 4.2cm (H) (1U)


Nett: 1.35kg Gross: 2.0kg

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