Sonifex RB-HD1 Stereo Headphone Amplifier 2019 - Red

For Sale 1X RB-HD1 Stereo Headphone Amplifier

USED BUT IN EXCELLENT CONDITION. THERE IS ONE DARK AREA ON THE FRONT PANEL WHERE A STICKY LABEL HAS BEEN REMOVED.

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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 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.

Technical Specification For RB-HD1

Audio Specification

Input impedance: >20kΩ balanced bridging (main)

Output Level: Drives 150mW into 32Ω to 600Ω headphones

Mono Mix Input Gain Range: 22dBu

Max Input Level: +28dBu

Volume Control: -80dB to +11dB gain

Connections

Main Stereo Inputs: 2 x XLR 3 pin female (balanced, can be unbalanced)

Mono Mix Input: 1 x XLR 3 pin female (balanced, can be unbalanced)

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

Remote Control: 9-pin D-type socket

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)

Equipment Type

RB-HD1: Stereo headphone amplifier

Physical Specification

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

19” (W) x 4.3” (D) x 1.7” (H) (1U)