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HA 4700

The HA4700 offers four high-power amplifiers that can drive loads down to 8 Ohms. Each amplifier features its own two-band EQ, 8-digit LED output meter, left and right MUTE switches, a ST./2-CH switch to toggle between stereo or double mono, and a 1/4" stereo AUX input to mix in any instrument or sound source.

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FEATURES

  • Professional, multi-purpose headphones amplifier system for stage and studio applications
  • Highest sonic quality with virtually all types of headphones >8 Ohms even at maximum volume
  • 4 independent high-power amplifier sections provide up to four stereo mixes with individual balance controls
  • Each input/aux section can be separately adjusted for 'more me' mixing
  • Stereo Aux input for each channel allows you to mix in any instrument or sound source
  • Multi-functional Stereo/2-Channel switch on each channel allows for either stereo playback or double mono operation
  • Ultra-musical High and Low EQ per channel for perfect sound adaptation
  • Output level control with accurate 8-digit LED output meter per channel
  • Left/right Mute switches for each channel allow two different mixes in mono mode
  • 1 front and 2 rear TRS output connectors per channel
  • Direct front panel input connector for easy connection of any sound source
  • Parallel Main outputs allow cascading of several headphones amplifiers
  • Servo-balanced inputs and outputs on 1/4" TRS and gold-plated XLR connectors
  • Toroidal transformer for lowest noise interference and highest audio quality
  • High-quality components and exceptionally rugged construction ensure long life
     

    SPECIFICATIONS

    Number of Channels4
    Input ConnectionsMain: 2 x XLR Female, Balanced
    Main: 2 x 1/4" TRS Phone, Balanced
    AUX In: 4 x 1/4" TRS Stereo Phone
    Direct In: 5 x 1/4" TRS Stereo Phone
    Output ConnectorsMain: 2 x XLR Male(L, R), Balanced
    Main: 2 x 1/4" TRS Phone (L, R), Balanced
    4 x 1/4" TRS Stereo Headphone
    8 x 1/4" TRS Stereo Headphone(Rear Panel)
    Maximum Output Level+24 dBm(load impedance 100 Ohms)
    Function Controls1 x Stereo/2-Channel Switch
    1 x Main In 1/Main In 2 Switch
    2 x Left, Right Mute Switches
    1 x Mono Switch
    1 x Main Input Level Control Knob
    4 x Balance Control Knobs
    4 x Output Level Control Knobs
    4 x Treble Control Knobs
    4 x Bass Control Knobs
    Frequency Response10 Hz - 150 kHz +/-3 dB
    THD + N0.006% Typical @ +4 dBu, 1 kHz, Gain 1
    Noise22 Hz - 22 kHz>90 dB @ 0 dBu
    DisplayInput Level: 1 x 4-Digit LED, MAIN 
    Output Level: 4 x 8-Digit LED, PHONES
    Dimensions1.75 x 19 x 8.5" (44.5 x 482.6 x 217mm)
    Weight5.08 lb (2.3 kg)
    SpecialtiesEQ, Muting, Balance Control and AUX Direct Inputs on Individual Channels
    8-Segment LED Metering per Channel
    Switchable Power Supply
     

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