audio-technica AT-BHA100 Balanced Headphone Amplifier User Guide

audio-technica AT-BHA100 Balanced Headphone Amplifier User Guide`

English

Thank you for purchasing this Audio-Technica product. Before using the product, read through the user manual to ensure that you will use theproduct correctly. Please keep this manual for future reference.

Safety precautions

Although this product was designed to be used safely, failing to use it correctly may result in an accident. To ensure safety, observe all warningsand cautions while using the product.

Important information

Warning:

To prevent fire or shock hazard, do not expose this apparatus to rain or moisture.

Caution:
  • Do not expose this apparatus to drips or splashes.
  • To avoid electric shock, do not open the cabinet.
  • Refer servicing to qualified personnel only.
  • Do not expose this apparatus to excessive heat such as that generated by sunshine, fire or other heat sources.
  • Do not subject this apparatus to strong impact.
  • This apparatus should be located close enough to the AC outlet so that you can easily grasp the AC adapter at any time.
  • In case of emergency, disconnect the AC adapter quickly.
  • Do not place any objects filled with liquids, such as vases, on this apparatus.
  • To prevent fire, do not place any naked flame sources (such as lighted candles) on this apparatus.
  • Do not install this apparatus in a confined space such as a bookcase or similar unit.
  • Install this apparatus only in the place where ventilation is good.
  • To prevent fire, do not cover the ventilation of this apparatus with newspapers, table-clothes, curtains, etc.
  • In order to maintain proper ventilation, do not place any objects around the rear of this apparatus. This apparatus should be placed at least 10 cm away from a rear wall. This apparatus should not be placed near to other electrical apparatuses. Keep the top and sides of this apparatus at least 10 cm away from any other surface if sitting on shelving, such as an audio apparatus rack. Failure to do so may cause this apparatus to overheat, which in turn may cause it or surrounding items to catch fire.
  • In the case of horizontal installation, be sure to attach the included feet to the four corners of the bottom of the product (two of the six are spare feet). In case of vertical installation, be sure to attach the included stand.

For customers in the USA

FCC Notice Warning:This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Caution:

You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference willnot occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined byturning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:––Reorient or relocate the receiving antenna.––Increase the separation between the equipment and receiver.––Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.––Consult the dealer or an experienced radio/TV technician for help.

Contact:

Responsible Company: Audio-Technica U.S., Inc. Address: 1221 Commerce Drive, Stow, Ohio 44224, USA Tel: 330-686-2600.

■  For customers in Canada

IC statement:CAN ICES-3 (B)/NMB-3(B)

Notes on use

  • Be sure to read the connected device’s user manual before use.
  • Headphone output terminals of the product are for the use of stereo headphones only. Never connect devices other than stereo headphones.
  • To connect 3.5 mm stereo headphone mini plug, use an appropriate conversion plug adapter (sold separately). Please note that, depending on the shape of the conversion plug, it may be difficult to remove it from the jack.
  • The contact pressure of the jack of the product is designed to be a little stronger in order to improve the sound quality. It may be difficult to remove some plugs (especially small plugs that are hard to grip) from the jack.
  • When turning on/off the power or connecting headphones to the product, make sure to set volume to the minimum level. Sudden loud sound may have bad effects on hearing. Also, it may cause failure of the headphone.
  • Purchase a cable suitable for the device to be connected.
  • Fully insert the plug of the connecting cable.
  • Stop music playback when plugging or unplugging cables.
  • A vacuum tube used in the product can cause it to become hot, but this is not a malfunction.
  • Keep the product at least 1 m from inverter-type fluorescent lights, LED lamps, mobile phones, Wi-Fi and other wireless devices. If you use this product near those devices, noise may be caused.
  • A vacuum tube is used in the product. To get sufficient sound quality, make sure to turn on the power and age it before using the product.––Before using it for the first time: at least 3 days––Before each use: at least 15 minutes

Included accessories

Installing the product

         Horizontal installation

          Vertical installation

Part names and functions

  1. Power indicator lamp
  2. Power button*
  3. Headphone output selector
  4. Balanced output terminal
  5. Headphone output
  6. Balanced output
  7. headphone output indicator lamp
  8. 6.3 mm headphone output terminal.
  9. Volume indicator lamp
  10. Volume control.

  1. Gain switch.
  2. LINE output terminal
  3. LINE input terminal
  4.  Balanced input terminal (Rch)
  5.  Balanced input terminal (Lch)
  6. Power input jack

Making connections

  1. When connecting headphones in a balanced connection, connect to either the 4.4 mm headphone output terminal or the balanced output terminal.
  2. When using the 6.3 mm headphone output terminal, two headphones can be used simultaneously.

 

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References

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