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Audio Research reference dac User Manual

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H I G H
D E F I N I T I O N
®
Reference DAC

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  • Page 1 H I G H D E F I N I T I O N ® Reference DAC...
  • Page 3 Thank you for choosing the Reference DAC to be a part of your high performance music listening system. Since 1970, Audio Research has been creating some of the world’s finest audio equipment. Each piece is handcrafted in Minnesota, and has been designed to provide many years of listening enjoyment.

  • Page 4: Table Of Contents

    Contents Warnings Illustrations and Diagrams Front and Rear Panel Menu Tree Icons Installation Before operating the Reference DAC In Your System A note about Vacuum Tubes Operation Connections Start-Up Shut-Down Input Connectors Break-in Output Connectors Front Panel Controls Control Connectors...

  • Page 5: Warnings

    Warnings To prevent fire, or shock hazard, do not If the unit is to be operated in an enclosure expose your Reference DAC to rain or such as an equipment rack, make certain moisture. that adequate airflow above and to each...
  • Page 6 VOLUME INPUT USB MEM < POWER > SELECT EXIT MUTE DIGITAL MEDIA BRIDGE REFERENCE DAC HIGH DEFINITION REFERENCE DAC DIGITAL MEDIA BRIDGE PLYMOUTH, MINNESOTA MADE IN U.S.A. WiFi RS-232 INPUT ANTENNA RIGHT CHANNEL LEFT CHANNEL USB2.0HS AES/EBU ETHERNET ANALOG OUTPUTS...

  • Page 10: Icons

    Icons Main Menu Status Bar AES/EBU Balance Left Balance Right Sharp Filter Internet Radio Soft Filter iPod Invert Media Server Mute Mono Settings Pause Toslink Play USB 2.0 HS Repeat All USB Stick Repeat One Functional Loading Shuffle Music File/Album Selected Song/Station...

  • Page 11: Installation

    Audio Research Customer Service (763- 577-9700) if you have any questions about installing or replacing vacuum tubes in this unit.

  • Page 12: In Your System

    DAC. That said, vacuum tubes must be be sure it is rated to handle this weight. replaced from time to time. The 6H30 tubes in the Reference DAC should have If the unit is to be operated in an enclosure an expected life of approximately 4,000...

  • Page 13: Connections

    (USB Mem). USB Mem: Insert a USB memory stick into Digital Inputs the front slot on the Reference DAC to USB 2.0HS: Connect a USB cable from your access music files loaded on the memory stick. NOTE: This connection is designed computer to the Reference DAC.
  • Page 14 The Reference DAC should be the first component turned on in your system volume level. (along with any additional sources). If the Reference DAC is turned on after the Note amplifier, and the preamplifier is also The Reference DAC is equipped with a powered, it will amplify any extraneous variable output and volume control.
  • Page 15 A.C. power The rotary control (on the right) selects any interruptions or low line voltage. When of the inputs on the Reference DAC, and is sensing these conditions, the preamp also a navigator through the settings and automatically goes into ‘Mute’ and disables front panel interface.
  • Page 16 Caution: do not turn up volume beyond Repeat: Toggles the Reference DAC between normal listening levels when “Mute” is engaged to avoid unexpected or possibly Repeat All and Repeat One track and no damaging sound levels.
  • Page 17 Automatic (DHPC) or Static IP Renderer Name Address. The preferred setup is to choose This section allows the Reference DAC to be Automatic (DHPC); on the following given a renderer name as displayed on a screen select Proxy off and then confirm by network.
  • Page 18 Edit and change display features Functional and Software information Edit names Reset Settings Several inputs on the Reference DAC can be Reset your Reference DAC to the original programmed to have customized names: factory settings. USB 2.0HS, AES/EBU, BNC, RCA, and TOS.
  • Page 19 Media Server choose the desired folder(s), selecting each folder of your choice. Once you have connected to the Reference DAC, or you reached the song level of the menu, you 2. From the Main Menu, use the navigation have established a wireless connection.
  • Page 20 USB 2.0 HS on the panel. 3. From the main menu, use the navigation rear panel of the Reference DAC. 3. Once you have reached radio station selecting the appropriate choices. buttons on the remote (or the Input knob on the front panel) to scroll to USB 2.0HS...
  • Page 21 480Mbps. Advanced; there it will say the speed of that USB port. I don’t see the Reference DAC in the SOUND panel on my Mac or Windows PC It is possible for a static discharge to...
  • Page 22 Perform the following operations with theReference DAC disconnected from the PC. Note If you have had another Audio Research driver installed on your PC, please see page 29 for instructions to uninstall any previous driver versions before installing the new version.
  • Page 23 Software Installation Open (unzip) the new USB DAC driver folder and install the new driver, using the “setup.exe” program, highlighted in the previous illustration. Follow the installation steps when prompted.
  • Page 24 Software Installation...
  • Page 25 Software Installation You will have the option to complete the process by connecting the Reference DAC at a later time if you choose. If so, click finish. Otherwise, when prompted during the install, connect the Reference DAC to a USB 2.0 H.S.
  • Page 26 PC). At this time, the system will automatically search for and complete installation of the audio output driver that is needed to format the audio output for Reference DAC. The system will prompt when completed “DAC USB WDM AUDIO device driver software installed successfully”.
  • Page 27 Software Installation If you open the window for that device, you will see the DAC USB device properties. Click on the “DRIVER” tab to see the current revision of the driver software installed.
  • Page 28 Speaker/Mixer” popup.) Select the “MIXER” and then choose the USB DAC 1/2 in order to set the audio output path to be directed to the DAC input. (Please remember that this output path will not show up or be selectable unless the Reference DAC is attached and powered up).
  • Page 29 Software Installation Removal of previous driver versions Uninstall any prior/existing Audio Research Corp. system Drivers (Windows OS). Using your PC system, find and open the Windows “Control Panel” features. Find and open the “Uninstall Programs” for your particular computer. This may be named:...
  • Page 30 Software Installation Find and select all programs named “DAC USB Driver” or similar, whose Publisher name is “AudioResearch”, “AudioResearchCorp” or “RigiSystems AG” or similar. Select Uninstall for each program found with this identity, and follow the directions to complete this process.
  • Page 31 Software Installation After you click “Finish” you should see an updated Program listing with the driver(s) removed:...

  • Page 32: Maintenance

    About Fuse Replacement The Reference DAC has two fuses; the mains fuse on the back panel, and an internal fuse towards the front, beneath the toroidal transformer. To access the internal fuse, Disposal and Recycling Guidelines remove the top cover.

  • Page 33: Warranty

    Audio Research factory, along with a to the balance of warranty remaining photocopy of the dated purchase receipt after original shipment to the retailer or for the product, a written description importer.

  • Page 34: Commpatibility And Connectivity

    Compatibility and Connectivity Codecs Sampling Rate Resolution Quality Tags 8-48 kHz 16 bit 8-320 kbit/s ID3 V2.4 24-96 kHz* 16 bit 8-320 kbit/s ID3 V2.4 AAC/AAC+v1/HE-AAC *output sampling rate=max 48 kHz 32-48 kHz 16 bit Q1-Q10 Ogg comments Ogg Vorbis 1.0 44.1-96 kHz 16/24 bit L0-L8...

  • Page 35: Specifications

    Specifications Frequency Response: Analog tube amplifier: +0-3dB, 0.5Hz to 200kHz at rated output. 0.15dB 20Hz to 20kHz. (Balanced, 200k ohms load). Digital Bandwidth Anti-aliasing filter @ Sample rate: 44.1kHz = 22kHz, 48kHz = 24kHz, 88.2kHz = 44kHz, 96kHz = 48kHz, 176.4kHz = 88.2kHz, 192kHz = 96kHz. Distortion: THD+N Less than .006% at 2V RMS BAL output.
  • Page 36 D E F I N I T I O N ® 3900 Annapolis Lane North Plymouth, MN 55447 www.audioresearch.com Specifications subject to change without notice. ©2016 Audio Research Corporation. Reproduction of this document in part or whole is expressly forbidden without written consent from Audio Research Corporation.

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