Meet the needs for up to 6 separate headphone users or amplifiers with the red box Sonifex Headphone Amplifier
The RB-HD6 headphone distribution amplifier is a 1U rack-mount which distributes stereo audio to up to 6 different sets
of headphones, or can be used as 6 independent headphone amplifiers, each with their own input and volume control. A
typical application might be to provide common headphone feeds for guests in a radio studio, with a separately derived
feed, perhaps including talk-back, for the presenter.
The main stereo input is on XLR-3 connectors on the rear panel which are electronically balanced and can be wired
unbalanced. A stereo/mono input select switch on the rear panel sums left and right outputs to provide a mono feed to
the headphones.
The unit can receive an override audio signal via a jack socket for each output channel. Plugging in the jack plug will
divert the headphone output from the master audio signal to the audio present on the jack plug. The override audio
inputs can also be individually configured as parallel outputs, by setting internal jumpers.
The master volume control adjusts overall level of the 6 outputs and does not affect the level of channels using the
override inputs. The master volume can be disabled by internal jumpers.
Please select the variant from the product options.
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Audio Specification
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+28dBu
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>20kohm balanced bridging (main), 10kohm unbal override
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Drives 150mW into 32-600ohm headphones
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-60dB to +18dB gain
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-12dB to +20dB gain (preset pots)
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Connections
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2 x XLR 3 pin female (balanced, can be unbalanced)
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2 x 0.25" (6.3mm) A/B gauge 3-pole stereo jack sockets
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9-pin D-type socket
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Filtered IEC, switchable 110-120V, or 220-240V, fused, 9W max
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Physical Specification
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Nett: 1.35kg Gross: 2.0kg
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Raw: 48cm (W) x 10.8cm (D) x 4.2cm (H) (1U) Boxed: 53cm (W) x 20.5cm (D) x 6cm (H)
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