Full Description

Altogether Now

Behringer's 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. The front panel gives you one Phones Out 1/4" jack per channel. A Main section features a 5-segment LED output meter, Direct In 1/4" jack and Master Level dial.

Connections

On the back panel you'll find two additional 1/4" outputs per channel. That means up to 12 pairs of headphones can listen to four separate mixes at once. The back panel also features stereo 1/4" and XLR inputs and outputs so you can connect multiple HA4700 units for even greater listening capacity. Meanwhile, ultra low-noise 4580 operational amplifiers deliver outstanding audio quality.

Great Sound, Great Value

When a recording session calls for everyone's heads and ears to be in the game, the HA4700 is essential. Hearing is believing.

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
• Designed and engineered in Germany

Specifications

• Frequency Response: 10Hz - 150kHz, ±3dB
• Noise: 22Hz - 22kHz, >90dB @ 0dBu
• Dynamic Range: 22Hz - 22kHz: 10dB
• Distortion (THD): 0.006% Typ. @ +4dBu, 1kHz, Gain 1

Main Input

• Connector: HF-Filtered Servo-Balanced XLR and 1/4'' TRS
• Impedance:
  • Unbalanced: 40k?
  • Balanced: 30k?
• Maximum Input Level: 16dBu Balanced/Unbalanced
• CMRR: Typically 40dB, >55dB @ 1kHz

Aux Input

• Connector: 1/4'' TRS (Stereo)
• Impedance: 5k?
• Maximum Input Level: +22dBu

Direct Input

• Connector: 1/4'' TRS (Stereo)
• Impedance: 15k?

Audio Outputs

• Main Connector: XLR and 1/4'' TRS, Balanced
• Headphone Connector: 1/4'' TRS (Stereo)

Power Amplifier

• Maximum Output Power:
  • +24dBm (100? Load Impedance)
  • +21dBm (8? Load Impedance)
• Minimum Output Load Impedance: 8k?

Controls

• Input Level: Variable
• Balance Per Channel: Mix Between Aux and Main Signals / Balanced Between Right and Left Channel
• Output Level Per Channel: Variable
• Treble:
  • Cutoff Frequency: 6kHz
  • Range: ±12db
• Bass:
  • Cutoff Frequency: 200Hz
  • Range: ±12db