mPRE mini-PRE Owner’s Manual **IMPORTANT** Check position of AC mains switch prior to connecting the unit to a power source. ©Wyred 4 Sound 2013 All rights reserved. v1.
Table of Contents Register Your Product 1 READ FIRST Important 1 Package Contents 1 Introduction 2 Design and Feature Overview 2-3 AC Mains Voltage Switch 4 Powering your Pre-amp 4 “Break-In” Period 4 Front Panel Operation 5 Aux 2 / Home Theater Bypass 5-6 Variable / Fixed Out 6 DC Trigger 6 USB Configuration (MAC) 6-7 USB Configuration (PC) 7-8 Back Panel Diagram 8 Troubleshooting 9 Got Hum? Warranty Coverage 9-10 10-12 Service 13 Specifications 14
Register Your Product! It is very important to complete the warranty registration form located on our website. You MUST complete and submit the form within 30 days of purchase to activate your warranty. When you navigate to our website there is a tab called “Register Products” that will allow you to fill out and submit the form. **Keep your packaging! It is custom made for your unit and will effectively protect it for possible future use.
Introduction Thank you for purchasing the Wyred 4 Sound mPRE. This compact Preamp/DAC is a very versatile unit that will adapt to many systems for years to come. Extensive amounts of engineering have been applied to produce remarkable performance and a noteworthy feature set in a chassis smaller than the average DAC. The nature of a Wyred 4 Sound product is able to reproduce your favorite recording with an abundance of transparency and detail.
rendering it immune to jitter. The USB interface is derived from the latest asynchronous XMOS design which is certified USB 2.0 High Speed and Audio Class 2.0 compliant. Consequently, our mPRE requires a quick driver install for PC machines and is driverless for Mac (10.6.4 and above) as well as Linux systems. Incredibly low latency in conjunction with the asynchronous mode communication and ultra precise clocks permits exceptionally high quality digital streaming.
AC Mains Voltage switch Located on the left side of the rear panel is an AC mains switch. When changing the 2 position slider switch the mPRE will need to be unplugged and powered down for at least 2 minutes. It is very important to ensure that the slide switch is in the proper position before applying power. Failure to do so will likely result in damaging the internal components and will not be covered under warranty. The fuse is located above the IEC plug on the rear of the unit.
Front panel operation and Remote Control Functions The mPRE is very simple to operate from the remote control or front panel. A power button with an illuminated ring light is located on the lower right portion of the front panel. When the mPRE is plugged in and the rear power switch is in the “on” position the ring light will be green when in standby. To turn the unit on, press the power button on the front and the ring light will then change to blue.
through the mPRE at unity gain. For example, if you feed 2.0V in you will get 2.0V out. This allows you to use the volume control of your processor to adjust the level of the gear connected to the mPRE. This is a configuration switch and must be set with the mPRE powered completely off! Variable/Fixed Out There are two RCA pre-outs on the back of the mPRE. One of these outputs, indicated by #11 on the back panel diagram (pg. 8), can be easily configured as a variable or fixed unity gain output.
5. 6. you click the gear icon a pop up window will be displayed, click on “Use this device for sound output” to properly apply the setting. Now you can open your preferred music playback program and find the preferences or options tab. Once you locate the output device option, make sure the “Wyred 4 Sound 24/192 USB Audio Out” audio interface is selected. It is not necessary to select the mPRE as the output device in iTunes and various other programs.
Audio Interface”. You may need to use the “Set Default” drop down menu located at the bottom of the window. Keep in mind that each media player may require different steps to complete the setup process such as selecting the output device and mode. 13. Setup is now complete……Enjoy your music! Back Panel Diagram 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.
Troubleshooting No sound? If you have your input source and speakers connected but you can’t get music to play, check the following: (Feel free to test for output at any time during this process if you find and correct a potential problem) Always check the position of the volume knob before starting to play music. Damage to any equipment due to volume spikes will not covered under warranty. 1. Verify that the power cord is securely plugged into the wall and the mPRE. 2.
to disconnect the inputs to your amp. If the noise is not present when the inputs are disconnected from either component, try putting a cheater plug (ground isolator) on one component at a time in order to locate the source of the ground loop. Once the source is located you can contact the manufacturer for further information regarding a solution. NOTE: We only recommend using a ground isolator for trouble shooting purposes, and should be removed after the problem has been found and resolved.
EXCLUSIONS AND LIMITATIONS Wyred 4 Sound does not warrant that the operation of the product will be uninterrupted or error-free. Wyred 4 Sound is not responsible for damage arising from failure to follow instructions relating to the product's use.
Obtaining warranty service Please access and review the resources referred to in the documentation accompanying this hardware product before requesting warranty service. If the product is still not functioning properly after making use of these resources, please contact the Wyred 4 Sound representatives or, if applicable, an Authorized Service Provider/dealer using the information provided on the Wyred 4 Sound website.
Service In the unlikely event there is a problem with your Wyred 4 Sound component, please contact your dealer, distributor, or Wyred 4 Sound to discuss the problem before you return the component to our manufacturing facility for repair. Products shipped to the factory will be refused and returned freight collect if not accompanied by a Wyred 4 Sound Service Department issued return authorization number (RA Number).
Specifications XLR In/Out RCA In/Out Digital In / XLR Out Typical THD+N (20Hz-20kHz) @ 2V < 0.002% THD+N (A Wt.) < 0.007% THD+N (A Wt.) < 0.006% THD+N (A Wt.) Noise (20Hz-20kHz) (A Wt) Frequency Response (20Hz-20kHz) < 12µV < 8µV < 12µV ± 0.020 db ± 0.002 db ± 0.002 db Channel Tracking ± 0.020 db ± 0.020 db ± 0.
