Antelope Zodiac Gold Owner's Manual - 8.3. Mute

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back and forth between current settings for USB operation mode and Headphone amplifier

impedance.

● Pushing the source button (10) will take you through the supported USB modes (UF1, UH1,

UH2) or Headphone impedance (HP1 or Hp2).

● Confirm the change by pressing the power button once. The display will again start to switch

between the available settings. Push the power button one more time to exit this mode and 

go to operating mode.

8.3. Mute

There are 2 attenuation possibilities: Full mute and -20dB attenuation (Dim- available with digital 

sources only).

● Full mute – Push the mute button once. A muting relay disconnects the signal from the 

analog outputs (18) & (19). Display fades down.

● -20dB attenuation – Push and hold the mute button for about one second. The digital signal 

is routed through the 20dB attenuator, thus audible both through the headphones and the 

outputs. Display brightness decreases slightly.

● Unmuting – When the device is in one of the above attenuator modes, pushing the mute 

button once restores the volume to the previous level. Display brightness returns to full 

illumination.

NOTE: By default, full mute is not applied to the headphone outputs. However, it is possible 

to make the headphones mute as well, via options in the computer control panel.

8.4. Digital Audio Quality ‒ factors and settings

Guidelines to improve the audio performance of your computer-based audio system:

● Keep volume controls at 100% on all operating systems

● If you are using iTunes and/or Mac OS X, set the sample-rate in the Audio MIDI applet 

located in the Applications / Utilities folder to match the file being played. By adding iTunes

plug-ins such as Amarra and Pure Music the sample rate will be matched automatically.

● For Windows 7 or Vista, sample rates can be automatically matched using WASAPI 

enhanced players such as J River Media Center.

● Keep word-length settings at 24 bits. Even if you are playing 16-bit audio, it is recommended 

to keep 24-bit settings.

● Turn-off operating system sounds.

● Keep all operating system’s DSP and plug-ins turned off.  Applications, device drivers, 

sound cards, etc., have various DSP effects such as EQ, Bass boost, surround sound, etc.

For best performance, visit our support pages and google for many websites devoted to optimizing 

your computer for audio performance.