MPN #HA6+    


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Six way headphone amplifier, two stereo inputs, stereo or mono operation

The HA6+ has 2 x XLR inputs that are used as the primary programme audio input, and 2 x XLR inputs that are used for the secondary aux audio input. These can be stereo, or, if a mono input, can be switched to appear on both sides of the headphones. There are left and right primary input gain controls on the rear panel, and they are on recessed screw terminals.

On the front panel there is a source control for each headphone output that allows a mix between the programme and aux input. Full left is programme only, full right is aux only, and anywhere in between is a variable mix.

Each of the six headphone amplifiers has its own volume level pot. There is also a master volume pot that controls the overall level of all amplifiers. This can be defeated via a rear panel dip switch.
Each of the six headphone outputs are available via front panel 6.35mm jack sockets, and in parallel on rear panel XLR connectors.

Rear panel inputs and outputs are electronically balanced on XLRs and can accommodate unbalanced connections if required.

Power is provided by an internal switch mode power supply, with a wide input range. There is also an input for external 12v DC power. The 12v DC input can be connected to the optional Signature PS1external DC Master Power Station, for situations where a redundant power supply is desirable.

A bright front panel LED indicates that the unit is operational.
  • Six stereo headphone amplifiers
  • Two stereo inputs
  • Source mix controls between both stereo inputs
  • Stereo or mono operation
  • All outputs available on the front or rear panel
  • Headphone range 32-1000 ohms
    Maximum Input Level: +24dBu
    Input Impedance: 30k
    Programme Input Type: Sophisticated electronically balanced
    (can be wired unbalanced)
    Programme Input Circuit: Stereo or mono (via rear panel switch)
    Programme Input Connectors: 2 x Neutrik 3 pin XLR sockets
    Cue Input Type: Sophisticated electronically balanced
    (can be wired unbalanced)
    Cue Input Circuit: Stereo
    Cue Input Connectors: 2 x Neutrik 3 pin XLR sockets
    Coarse Gain Range: 20dB on programme input only
    Front Panel Volume Pots Range: 75dB (-65dB to +10dB)
    Front Panel Source Control Range: 70dB (-70dB to 0dBu)

    Output Type: Sophisticated electronically balanced. They can accept mono or stereo jacks with automatic level correction for low or high impedance headphones.
    Output Connectors: Front panel Neutrik A-gauge TRS 6.35mm (1/4") jack socket in parallel with rear panel Neutrik 3 pin XLR plug
    Frequency Response: -2.0dB 20Hz, -0.5dB 20kHz
    Maximum Output Level: +19dBu/67.07mW into 600 ohms and +8dBu/6.2mW into 32 ohms
    Distortion: <0.02%THD@100Hz & 0.005%@10kHz. Reference to +8dBu output
    Noise: >-83.3dB @ line up unweighted RMS (22Hz to 22kHz)
    Headphone Impedance: 32-1000 ohms
    Crosstalk: Programme to Aux Input 1k tone @ line up -72dBu

    Mains Input: Filtered IEC, 100 to 240VAC 47 - 63Hz
    AC Consumption: 4 Watts@230VAC
    Internal Mains Fuse: 20mm 1A Anti Surge
    DC Input: 4 Pin Neutrik XLR plug +/- 12V
    DC Consumption: +12V=150mA, -12V=150mA

    Size: 445 x 123 x 44mm (LxDxH) no rack ears, 482mm 19" (1RU) with rack ears
    Weight: 1.26kg
    Shipping Weight: 2.7kg
    Shipping Carton: Rugged export quality cardboard carton 610 x 420 x 130mm LxDxH
    Mechanics: All aluminium construction, anodized and laser etched
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