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RB-HD6 Headphone Distribution Amplifiers


RB-HD1 Headphone Distribution Amplifiers

RB-HD2 Headphone Distribution Amplifiers

Quick Overview

Dual Stereo Headphone Amplifier (1U)
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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.

RB-HD2 Diagram

Technical Specification For RB-HD2

Audio Specification

Input impedance:>20kΩ balanced bridging (main)Max Input Level:+28dBuInput Gain Range:-12dB to +20dB gain (pre-set pots)
Output Level:Drives 150mW into 32Ω to 600Ω headphonesVolume Controls:-80dB to +11dB gain  


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 socketsMains Input:Filtered IEC, switchable 110-120V, or 220-240V, fused, 9W maxFuse Rating:Anti-surge fuse 100mA 20 x 5mm (230VAC)
Anti-surge fuse 250mA 20 x 5mm (115VAC)  

Equipment Type

RB-HD2:Dual 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)
Dimensions (Boxed):53cm (W) x 20.5cm (D) x 6cm
21” (W) x 8” (D) x 2.4”
Weight:Nett: 1.35kg Gross: 2.0kg
Nett: 3lbs     Gross: 4.4lbs