PS Audio DirectStream Junior Owner's Reference Manual
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PS Audio DirectStream Junior Owner's Reference Manual

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See also: Owner's Manual & Reference
Owner's Reference
®
Owner's Reference
DirectStream Junior
Instructions for Use
DirectStream Junior
™
4826 Sterling Drive, Boulder, CO 80301
PH: 720.406.8946 service@psaudio.com www.psaudio.com
Rev A
©2016 PS Audio Inc. All rights reserved.

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  • Page 1 Owner’s Reference ® Owner’s Reference DirectStream Junior Instructions for Use DirectStream Junior ™ 4826 Sterling Drive, Boulder, CO 80301 PH: 720.406.8946 service@psaudio.com www.psaudio.com Rev A ©2016 PS Audio Inc. All rights reserved.

  • Page 2: Important Safety Instructions

    Please contact your authorized dealer, distributor, or PS Audio if you have any questions not addressed in this reference manual. PS Audio ® is a registered trademark of PS Audio Inc., and is restricted for use by PS Audio, Inc., its subsidiaries, and authorized agents.
  • Page 3 DirectStream Junior is based on a FPGA (Field Programmable Gate Array) as its core processor and no off-the-shelf DAC chips are used in its design. DirectStream Junior is less sensitive to the vagaries of input source types and their level of jitter Less Sensitive to than most DACs made.
  • Page 4 There is little difference between TOSLINK or I2S because the output clock’s rate only depends on the long term average rate of the inputs not on any edge or other local feature. The heart of DirectStream Junior is the DSD engine itself. Regardless of input format, whether PCM The Heart of...
  • Page 5 Highlights 1. DirectStream Junior runs from one master clock designed to subtend all possible combinations of sub-clocks, from 44.1, 88.2, 48, 96, etc in order to eliminate the need for multiple clocks that cause errors and problems associated when noise from the unused clock propagates to the desired clock.
  • Page 6 144dB S/N are employed along with many guard bits in the IIR fi lters and the sigma-delta modulator. 17. Every trace on the PC board is hand routed: even for the digital sections. No autorouting is 4826 Sterling Drive, Boulder, CO 80301 Introduction PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio Inc. All rights reserved.
  • Page 7 The PerfectWave DirectStream Junior DAC represents a signifi cant departure in the design and execution of PS Audio’s products. We believe this new instrument will help further our industry, music and the faithful reproduction of music around the world, at an affordable price.

  • Page 8: Digital Inputs

    LOCATION Location A good location for DirectStream Junior is in a cabinet or on a shelf at an easily accessible height. Care should be taken to keep it away from power amplifi ers or large potentially hum inducing products. The IR (infrared) receiver for the remote is located to the left of the volume control knob. A direct line of sight will help with DirectStream Junior's IR sensor.

  • Page 9: Warranty Registration

    To register your new unit, look on the back panel of DirectStream Junior and note the serial number. Using any web browser, go to www.psaudio.com and click on My PS. From there you can click on Register Products.
  • Page 10 Getting Started ® Owner’s Reference DirectStream Junior 4826 Sterling Drive, Boulder, CO 80301 Getting Started PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio Inc. All rights reserved.

  • Page 11: Connecting The Output

    CONNECTING DIRECTSTREAM JUNIOR'S OUTPUT Connecting the DirectStream Junior is designed to drive a power amplifi er directly, or as another input on a preamplifi er. Output The outputs of DirectStream Junior are high-performance, high current outputs that can drive long lengths of interconnect cable without degradation.
  • Page 12 Whatever you choose, make sure it honors the music. Rear Panel Power Turn the AC power switch in the rear of DirectStream Junior to the ON position. The power switch is Switch located to the left of the AC inlet as you face the rear panel.

  • Page 13: Select The Input

    Press the selector button once again, while in the setup mode, to toggle to the input naming screen. The input already selected will appear, along with data and bit rate information. Depress and 4826 Sterling Drive, Boulder, CO 80301 Getting Started PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio Inc. All rights reserved.

  • Page 14: Screen Brightness

    If the power amplifi er or preamplifi er is overly sensitive, or you need to reduce the output level of DirectStream Junior for any reason, you can activate the output attenuator to reach a lower level. There should be no sonic penalty for doing so.

  • Page 15: Network Bridge

    Bridge Operation BRIDGE II OPERATION The PS Audio Network Bridge II is built into DirectStream Junior. The Bridge provides network connectivity to a media server or NAS. The Network Bridge is a UPnP compatible device, requiring a UPnP server and controller to stream to the Bridge. A program like JRiver Media Center, available on both Mac and Windows platforms, can be confi...
  • Page 16 Owner’s Reference DirectStream Junior hard wired through CAT 5. Select the PS Audio Bridge, or whatever friendly name you have set for the Bridge, to connect the UPnP server. Once connected, change DirectStream Junior’s input to Input 7, labeled the same as the Bridge friendly name. You should now be able to stream music to the Bridge.
  • Page 17 MConnect’s MController app is our recommended mobile platform UPnP controller and is available for both Android and Apple tablets and phones. 4826 Sterling Drive, Boulder, CO 80301 Getting Started PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio Inc. All rights reserved.

  • Page 18: Friendly Name

    MController Play-To windows as described above. To change the friendly name, you must access DirectStream Junior’s setup window. Press and hold the front panel selector button (next to the display on the lefthand side) for 3 seconds to access the setup menu. Press the selector button to toggle to the next setup screen.
  • Page 19 UPDATE DIRECTSTREAM JUNIOR’S OPERATING SYSTEM Junior’s OS DirectStream Junior operates from sophisticated software that is built in to the device, but upgradable Updates by the user through the rear panel mounted USB connector. To check for the current fi rmware version, simply hold the selector button next to the display for 3 seconds to enter the setup scroll to the Version screen.
  • Page 20 USB memory stick directly from PS Audio, or downloaded to your own USB memory stick for free from Firmware is the PS Audio website. To install, place the USB stick in the rear of DirectStream Junior. Then, turn off Available the rear panel power switch.
  • Page 21 Getting Started ® Owner’s Reference DirectStream Junior 4826 Sterling Drive, Boulder, CO 80301 Getting Started PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio Inc. All rights reserved.

  • Page 22: Troubleshooting

    The next step is to check and see if the digital input is properly connected. Look on the front panel of DirectStream Junior to see if the locked light is illuminated. If it is not, this is most likely the problem.

  • Page 23: Bridge Connection

    Confl ict and the device. DirectStream Junior will show up under device manager as “PS Audio PerfectWave DSD” It should show up under a heading “PS Audio USB 2.0 Audio Devices”, this is the USB2.0 driver. The entry under “Sound video and game controllers” is the USB1.0 fallback driver.
  • Page 24 DirectStream Junior, and see if the hum goes away when you turn the preamplifi er, integrated, receiver or amplifi er back on. If it does, it’s most likely a ground loop or buzz from a dimmer.
  • Page 25 Then start adding back components one at a time until the hum returns. Finding the problem is 9/10ths of the work in fi nding a solution. 4826 Sterling Drive, Boulder, CO 80301 Troubleshooting PH: 720.406.8946 service@psaudio.com www.psaudio.com 15-073-01-1 Rev A ©2016 PS Audio International Inc. All rights reserved.

  • Page 26: Warranty

    PS Audio. What is the Period of Coverage? This limited warranty is in effect for 3 years from the date the unit was fi rst purchased from PS Audio or its dealers and agents.
  • Page 27 Contact PS Audio or an authorized PS Audio repair center to receive an RMA#. • You must put the RMA# on all returns. If it is not clearly marked, PS Audio will return the package back to you, freight collect.
  • Page 28 Changes to Our Products PS Audio reserves the right to modify the design of any product without obligation to purchasers of previously manufactured products and to change the prices or specifi cations of any products without notice or obligation to any person.

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