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

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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
©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 ©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 DAC chips are used in its design. Less sensitive to DirectStream Junior is less sensitive to the vagaries of input source types and their level of jitter jitter than most DACs made. Remarkably low jitter sensitivity is one of the hallmarks of this design and is accomplished by not using classic edge transition detection techniques used on the digital input data.
  • Page 4 The heart of The heart of DirectStream Junior is the DSD engine itself. Regardless of input format, whether PCM or DSD, all data are upsampled to 30 bits running at 10 times the standard DSD rate and Junior then back down again to double rate DSD for noise shaping.

  • Page 5: Hardware Highlights

    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 44100Hz), it was decided instead to run at double rate DSD to have a wider audio band below the upsampling and noise shaping filters. Noise shaping is how a high rate sampled signal can have 4826 Sterling Drive, Boulder, CO 80301 PH: 720.406.8946 service@psaudio.com www.psaudio.com ©2016 PS Audio Inc. All rights reserved.
  • Page 7 The PerfectWave DirectStream Junior DAC represents a significant 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

    DirectStream Junior 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 amplifiers or large potentially hum inducing products. The IR (infrared) receiver for the remote is located to the left of the volume control knob.

  • Page 9: Connecting To A Digital Source

    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 Register Products.
  • Page 10 Getting Started ® Owner’s Reference DirectStream Junior 4826 Sterling Drive, Boulder, CO 80301 Getting Started x PH: 720.406.8946 service@psaudio.com www.psaudio.com ©2016 PS Audio Inc. All rights reserved.
  • Page 11 USB is the preferred method of connection for a direct-to-computer connection Direct to and DirectStream Junior is capable of processing up to 192kHz 24 bit PCM data as Computer well as both single and double rate DSD converted to DoP. Connect DirectStream Junior to your computer using a well regarded USB cable and make sure to set the output of your computer to the higher 192kHz 24 bit standard.
  • Page 12 Plug either the RCA or the XLR outputs of DirectStream Junior into a line level input on the preamp, integrated, amplifier or subwoofer. Do NOT plug the output of DirectStream Junior into a phono or equalized input of any type.
  • Page 13 Rear panel power Turn the AC power switch in the rear of DirectStream Junior to the ON position. switch The power switch is located to the left of the AC inlet as you face the rear panel.

  • Page 14: Select The Input

    For greater convenience it is possible to assign a custom name to each input such as PWT, XLR, etc. To name each input, you must first enter the setup display. 4826 Sterling Drive, Boulder, CO 80301 Getting Started xiv PH: 720.406.8946 service@psaudio.com www.psaudio.com ©2016 PS Audio Inc. All rights reserved.
  • Page 15 If the power amplifier, or preamplifier, 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.
  • Page 16 DirectStream Junior can become far more than a high-performance stereo DAC. Network Bridge With its built-in Network Bridge II that connects to any home network. The Bridge II allows playback from a source not directly connected to DirectStream Junior 4826 Sterling Drive, Boulder, CO 80301 Getting Started xvi PH: 720.406.8946 service@psaudio.com www.psaudio.com...
  • Page 17 Bridge II Operation Bridge 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.
  • Page 18 DirectStream Junior 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 19 Bridge II to another, more familiar name, like John’s DAC. This friendly name is what will appear in the JRiver or 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 for 3 seconds to access the setup menu.
  • Page 20 Update DirectStream Junior’s Operating System Junior’s OS DirectStream Junior operates from sophisticated software that is built in to the updates device, but upgradable by the user through the rear panel mounted USB connector. To check for the current firmware version simply hold the selector button next to...
  • Page 21 USB memory stick for free from the PS Audio website. To install, place available the USB stick in the rear of DirectStream Junior. Then, turn off the rear panel power switch. Wait for 10 seconds, then turn the rear panel main power switch to the on position, rebooting the instrument.
  • Page 22 Getting Started ® Owner’s Reference DirectStream Junior 4826 Sterling Drive, Boulder, CO 80301 Getting Started xxii PH: 720.406.8946 service@psaudio.com www.psaudio.com ©2016 PS Audio Inc. All rights reserved.

  • Page 23: Troubleshooting

    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. You can troubleshoot this by making sure DirectStream Junior is on the proper input and that you have connected the input correctly.
  • Page 24 Windows to reinstall the driver 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.
  • Page 25 Amplifier off, disconnect the audio cables between it and DirectStream Junior, and see if the hum goes away when you turn the preamplifier, integrated, receiver or Amplifier back on.
  • Page 26 Troubleshooting ® Owner’s Reference DirectStream Junior If this doesn’t solve the problem, reconnect DirectStream Junior and follow these easy humbusting tips. The easiest way to figure out where ground loop problems lie is by the process of Ground loops elimination. You need to determine where the hum or buzz is coming from within your system.
  • Page 27 Finding the problem is 9/10th of the work in finding a solution. 4826 Sterling Drive, Boulder, CO 80301 Troubleshooting xxvii PH: 720.406.8946 service@psaudio.com www.psaudio.com ©2016 PS Audio International Inc. All rights reserved.

  • Page 28: Limited Three Year Warranty

    What Will PS Audio Do to Correct the Problem? In the event your product fails your sole remedy under this limited warranty shall be to return the product to PS Audio or an authorized PS Audio repair center. The product will be repaired without charge for parts or labor, replaced, or the purchase price refunded through the original point of purchase, at the option of PS Audio.
  • Page 29 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, •...
  • Page 30 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 specifications of any products without notice or obligation to any person.

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