Furman Sound

Furman Sound HA-6AB 6-Output 20W Per Channel Headphone/Power Amplifier with Balanced Connectors

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About the Furman Sound HA-6AB

The Furman Sound HA-6AB headphone/monitor amplifier is a unique combination of a headphone amplifier and a conventional power amplifier. This combination of functions can save the expense of an extra power amplifier in many recording studios. The unit is an economical 20 watt per channel stereo amplifier, but unlike a conventional power amplifier, it has six headphone outputs on the front panel, each with a volume control.

When using the HA-6AB for overdubbing or rehearsal, the amplifier provides more than adequate power for headphones, even older low-impedance models and allows each musician to set their own volume level. When overdubbing is complete, the unit can power tape playback through either or both of two sets of speakers, selectable from front panel pushbuttons.

The HA-6AB features an input level control on the front panel and a pair of yellow LED's light up whenever signal is present, while another pair of red LED's show any overload conditions in either channel. While most headphone amplifiers provide half a watt or less per headphone channel, the unit's higher power can drive headphones of any impedance to their full rated listening level and do so with minimal noise and distortion. Its power capacity is also just right for the small "cube" reference speakers used in most recording studios as a comparison with the main control room monitors.

Additional remote stations can be daisy chained to the main unit. The HA-6AB utilizes an efficient toroidal power transformer for silent operation and low magnetic leakage, as required in a studio environment. It is fully protected against thermal overload and can withstand a short circuit on any or all outputs for an indefinite time without damage.

Furman Sound HA-6AB Features

  • Powers headphones and speakers
  • 20 watts per channel, stereo
  • Toroidal power transformer for ultraquiet performance
  • 6 headphone outputs, each with its own volume control
  • Separate front panel switches for speakers and remote headphone outputs or a second set of speakers
  • Automatically switches to mono mode when right channel is not used
  • Signal-present and Overload LED's for each channel
  • Ground lift switch
  • Power-on indicator
  • Convenient Remote/Satellites outlet provides signal for up to 12 remote headphone stations. (Such as the Furman HR-2 remote station.)

Furman Sound HA-6AB Specifications

Outputs: Power 20 watts per channel, stereo, into either 4 ohms or 8 ohms, 20 Hz to 20 KHz.
Outputs: Connectors Speakers A: 5-way binding posts (accommodates dual banana plugs, spade lugs, bare wires, etc.) Speakers B-Satellite
Outputs: Remote Male XLR
Inputs: Input Impedance 20K ohms.
Inputs: Sensitivity -4 dBV (635 mv) required for full output
Inputs: Connectors HA-6AB, both stereo phone (balanced) and XLR (balanced)
Distortion .01 % THD at full rated power at 1 KHz; .05% THD 20Hz to 20 KHz.
Signal to Noise Greater than 99 dB below full rated output
Frequency Response +0, -1 dB from 20 Hz to 20 KHz, 1 watt output
Dynamic Headroom 2 dB, stereo, measured with 10 ms toneburst at I KHz, 1 % duty cycle
Power Requirement 120 VAC, 60 Hz, 70 watts
Dimensions (W x H x D) 19 x 1.75 x 7.25" (48.2 x 4.4 x 18.4 cm)
Weight 7.5 lbs (3.4 kg)
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