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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 is from 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. This option is controlled by the Local/Remotes Control on the rear panel.
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.
The stereo/mono switch is recessed on the rear panel to prevent accidental knocking.
An LED power indicator on the front panel displays the power supply connection.
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