Antelope Audio Zodiac DAC - Manual (Page 11)

12. TOSLINK Inputs
TOSLINK/Optical connectors for use with compatible equipment. See also (7) Source Button.
13. S/PDIF Inputs
75 Ω S/PDIF inputs for use with compatible equipment. See also (7) Source Button.
14. USB High-Speed
Hi Speed USB (480 Mbits). Zodiac uses USB connector Type Mini B and operates up to 192kHz
sample rate with native drivers on most operating systems.
7. Advanced User Tips
7.1. Source input
Input sources can be switched by the source button (7). Only digital inputs with valid signals are
available for switching. (Of the analog inputs, An2 is permanently available and An1 is available
once a jack is inserted, without the requirement for the signal to be present.)
Example: If only signals on AES and TOSLINK1 inputs are present, they will be the only options
available when selecting the source (together with An2 as stated above).
When a digital input source is selected and its signal is lost, the Lock light will flash and the display
will revert to show the name of the selected input (identifying the lost signal). Now, if you scroll
through the available source inputs, the lost input source will no longer be available. You must either
select a new input source, or if you re-establish the lost signal, it will be detected immediately and
appear as an input source option again.
7.2. Changing USB mode and/or Headphone amplifier impedance
There are 2 available USB operation modes:
● UF1 – USB Full Speed Mode (12Mbits) for backwards compatibility. Supports sample rates
up to 96KHz.
● UH1 – USB High Speed Mode (480Mbits). USB Audio Class 1.0. Sample rates up to
192KHz (default).
NOTE: As of May 2011, the only OS’s that support USB Audio Class 2.0 are Mac OS X and Linux.
For more information, visit the support pages of www.antelopeaudio.com
Use the following procedure to change default values (FOR SAFETY, before you start, make
sure that you are not wearing headphones and that volume levels are turned down as the
volume levels can shift suddenly with the risk of damage to your ears and equipment):
● Switch to standby mode by pressing the power button (5). Display (3) will switch off to
signify standby mode.
● Press and hold the source button (7) for 2-3 seconds. The display shows the current
settings for USB operation mode.
● Pushing the source button (7) will take you through the supported USB modes (UF1, Uh1).
● Confirm the change by pressing the power button. The display will revert to showing the
current sample rate as you exit this mode and return to operating mode.
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