Antelope 2 PURE User manual

Pure2 User Manual 2
CONTENTS
BEFORE YOU BEGIN 3
PRODUCT ACTIVATION 5
Configuring for Windows 10 7
Configuring for macOS (10.14 or later) 9
macOS 10.15 Catalina Workaround 10
ACTIVATE YOUR PRODUCT WARRANTY 11
REAR PANEL EXPLAINED 15
CONTROL PANEL17
1. Function Strip 17
2. VU Meters 18
3. 'Main' tab 19
4. 'Digital' tab 19
5. 'I/O' tab 20
6. 'Settings' tab 21
7. Volume Meter 21
8. Presets 21
ADVANCED NOTES 22
SAFETY NOTES 24
CUSTOMER SUPPORT INFORMATION 25
MY ANTELOPE AUDIO PRODUCT ISN’T WORKING. 26
LIMITED WARRANTY POLICY 27
TECHNICAL SPECIFICATIONS 33

Pure2 User Manual 3
BEFORE YOU BEGIN
Congratulations on your purchase! Pure2 is a mastering-grade 24/192 kHz AD/DA 2-
channel converter and master clock with a relay-controlled volume attenuator. It features
Antelope Audio’s world-renowned Acoustically Focused Clocking (AFC) technology, and
also utilizes pristine analog circuitry for unsurpassed digital clarity and analog realism. The
unit is driven by a proprietary multi-stage linear power supply for optimal performance.
The relay-based stepped attenuator allows for exceptional accuracy when monitoring
through speakers, with perfect L/R balance even at lower volume levels. A superb
headphone amp features its own high-quality DA Conversion.
An intuitive software control panel for MacOS or Windows provides users the ability to
manage all facets of the device operation. Pure2 is also configurable via the front panel
with user-definable presets.
Several Word Clock outputs ensure Pure2 can be the master clock for an entire studio. For
those seeking the highest level of performance, the unit can also be locked to Antelope’s
legendary 10M Atomic Clock.
A flexible set of connectivity options like S/PDIF, TOSLINK, AES, and USB provide
abundant compatibility with other professional equipment.
Should you ever find yourself struggling, do not hesitate to contact our Customer
Support team over phone, live chat and our ticket system. You can also visit Antelope

Pure2 User Manual 4
Audio on YouTube and explore our video tutorials or join the Antelope Audio
Users Facebook group and ask for advice. The Knowledge Base is also a good source of
information.
Enjoy working with Pure2!
Best wishes,
Team Antelope

Pure2 User Manual 5
MANDATORY ONLINE ACTIVATION
Please note that the mandatory device activation procedure requires an active Internet
connection on your computer. Activating an Antelope device offline is not possible.
PRODUCT ACTIVATION
Step 1: Getting Started
Connect the Pure2 to a power outlet using an AC power cable. Plug in the device to your
computer using a USB cable.
Step 2: Install the Pure2 Launcher/Control Panel (macOS & Win)
Download and install the Pure2 Launcher/Control Panel application for Windows or
macOS from here.
Open and install the Launcher/Control Panel by following the steps in the installation
wizard.
Step 3: Activate your Pure2
Once the installation is completed, start the application. You will be prompted to create an
Antelope ID directly from the application. Fill out the necessary information and
click Continue. If you already have an active Antelope ID, click on Use existing Antelope
ID.

Pure2 User Manual 6
Bear in mind, that your Antelope ID is different and has no relation to your user profile on
antelopeaudio.com.
Sign in using your credentials. If you have just created your Antelope ID, do not forget to
activate it using the link in the e-mail you have just received.
After successfully signing in your Antelope ID, you will be asked to fill
in additional information concerning your recent purchase.

Pure2 User Manual 7
Once you have filled in the required information, click Done. You can now begin using
your Pure2.
Configuring for Windows 10
Windows 10 needs a few tweaks to get everything up and running.
1. Enter the ‘Sounds’ options window from the Control Panel or right-click the speaker icon
in the system tray and choose ‘Open Sound settings’.
2. Make sure Pure2 is chosen under 'Output' and 'Input'.
Next, click 'Device Properties' under 'Output'. Then, click 'Additional Device Properties'.
3. Enter the ‘Supported Formats’ tab and place checkmarks next to all the available
sample rates.

Pure2 User Manual 8
4. Enter the ‘Enhancements’ tab and make sure all enhancements are disabled.
5. Enter the ‘Advanced’ tab and choose any of the available “2 channel, 24-bit” modes.
Click ‘OK’ to close the window.
6. Back in Sound settings, click 'Device Properties' under 'Input'. Then, click 'Additional
Device Properties'. Enter the 'Enhancements' tab and disable all enhancements. Click 'OK'
to close the window.
Tips
●If you are experiencing interruptions or failure when using your DAW and trying to
playback audio from your OS at the same time, make sure that the device sample
rate matches the one of your DAW session.
●You can disable the device and enable it again from the ‘Playback’ tab to refresh the
driver. This will be similar to disconnecting and re-connecting your device, which
makes Windows reset the playback configuration of the applications you are using.
●In some cases, disabling the ‘Exclusive mode’ functionality from the ‘Advanced’ tab
in ‘Playback’ Properties might help when running multiple playback applications at
the same time.
●Disabling the 32kHz sample rate isn’t mandatory, but it might help in general.
Further Reading
Antelope Audio Knowledge Base - Windows 10 Optimization

Pure2 User Manual 9
Configuring for macOS (10.14 or later)
The new security settings introduced in macOS Mojave 10.14 (and later releases) may
result in no input signal reaching your DAW, despite having everything set up correctly.
These steps apply when you are using the Pure2 in a DAW for the first time:
1. Launch your DAW and choose Pure2 as the input device. The following dialog box will
appear (if using Ableton Live 10 Suite, for example):
3. Click 'OK' and your DAW should function normally.
However, if the events above did not occur for some reason, or you are using multiple
DAWs, you must do a manual tweak for each in 'Security & Privacy' settings:
1. Click the 'Apple' symbol and choose 'System Preferences'. Head to the 'Security &
Privacy' settings menu.
2. Click the 'Privacy' tab. In the column on the left, choose ‘Microphone’. Make sure there's
a checkmark next to any DAW you want to use:

Pure2 User Manual 10
macOS 10.15 Catalina Workaround
Please note that Pure2 is not officially compatible with macOS Catalina. However, there is
a reliable workaround:
1. Download and install the latest Antelope Launcher - click to download. This step is
necessary in order to install the latest Antelope Server.
2. Delete the Antelope Audio installation file from your macOS Downloads Folder. Then
navigate to your macOS Applications folder and delete the Antelope Launcher.
3. Download and install the dedicated Pure2 launcher from the Pure2 'Download' section.
4. Restart your computer.
5. Start the Pure2 launcher.

Pure2 User Manual 11
ACTIVATE YOUR PRODUCT WARRANTY
You will be required to activate your product warranty from the My Warranty tab in My
Antelope Account. To activate your product, click on the text that sends you to the page
where you can add a custom warranty.
On the following screen you will be asked to enter information about your new device and
to attach your warranty. Select your device from the list under Device type and add a
serial number. You can find it on the back side of your device’s rack ears. After entering the
serial number enter the date of purchase.
The last step is to attach your warranty. You can add multiple files (up to five) by using the
plus sign. Acceptable formats are .pdf, .jpg, .png, .jpeg, .heif, and the size limit is 7 MB per
file. Once you have completed the steps click Add Warranty.
After successfully completing the process, you can click on View Warranty to see if your
file has been uploaded correctly.

Pure2 User Manual 12
FRONT PANEL EXPLAINED
From left to right:
1. Power button
●Press to toggle standby/on state.
●Press and hold the power button to enter the Options menu with the following
entries:
Device Info
Displays device serial number, revision and firmware version.
Brightness
Adjust the screen brightness.
Trim Control
Lets you choose between Factory and Manual signal trim adjustments. Manual trim
adjustments are made from the trim adjustment screws on the unit's rear panel.
Factory Reset
Re-initializes the Pure2. Note that all presets and settings will be lost.
Screen Saver Time
Adjust the screen saver duration. We recommend setting it to the shortest time you are
comfortable with to prevent screen burn-in.
Screen Saver Style

Pure2 User Manual 13
Choose the screensaver type.
10M Calibration
Calibration for the Antelope Audio 10M Atomic Master Clock.
Turn the rotary control to choose an entry. Press the rotary control to enter. Turn the
rotary control to adjust values. Press any of the Power, Frequency Up or Frequency Down
buttons to exit the menu.
2. Oven Clock light
When lit, this indicates Pure2 is clocked by its internal oven-controlled crystal oscillator.
3. Lock light
When lit, this indicates Pure2 is locked to an incoming digital signal via rear panel
connectors including Word Clock, AES, S/PDIF, Toslink, and USB playback. The light will
flash if there is no digital signal.
Note that when the device is in 'Oven' mode and you play a track from your computer over
USB, the clock is slaved to it and the display shows: “Clock: USB”. The Oven Clock light is
lit and the Lock light remains off. Note that the Pure2 is still being clocked by its internal
clock.
4. Atomic Clock light
When lit, this indicates Pure2 is locked to an atomic signal that enters through the 10M
input on the rear panel. When an active atomic signal is present, the Oven Clock light
switches off and the Atomic Clock light switches on. This only occurs in Oven Mode. If a
digital input is selected for sync source, the Lock light switches on if there is a valid signal
present in the input, or blinks when the signal is missing.
5. Frequency buttons
●These two buttons let you increase and decrease the sample rate, choosing from:
32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz. The current frequency
is indicated on the display.

Pure2 User Manual 14
●Press and hold the ‘Frequency Up’ button to see the routing table. Release the
button to return to the main display view.
6. Display
Multi-function display that shows Sample Rate on the left and volume meters for the
inputs and outputs on the right. The sources are assignable and can be chosen from the
software control panel.
Note: There might be a protective film over the display, which dims the illumination – feel
free to remove it.
7. Rotary control
This large stepped attenuator is used for navigating the Options menu and adjusting levels
for the monitor and headphone outputs. Use the button to the right to switch between
headphone and monitor volume control. The volume level is shown on the display while
adjusting, with a range of -95dB to 0dB at control increments of 0.05dB. By pressing the
Rotary control, you can mute and un-mute the currently chosen output.
8. Output Select button
This lets you choose whether the Rotary control adjusts volume for the monitor outputs or
the headphone outputs.
9. Preset buttons
Three Preset buttons store and recall up to three device configurations. Save presets by
pressing and holding any of the buttons for 2 seconds. This can also be done from the
PC/Mac control panel by holding the Command key for Mac / Control key for Windows
while clicking on 'PRESET 1-3'.
10. Headphone Output
¼” TRS Stereo Headphone jack for connecting headphones with a wide range of
impedances.

Pure2 User Manual 15
REAR PANEL EXPLAINED
From left to right:
11. Mains Power Connection
Note that Pure2 has a voltage selector and must be adjusted before powering up. The IEC
connector supports ~110V @ 60Hz/ ~220V @ 50Hz. Choose the appropriate mains voltage
for your country.
12. WC Input
BNC connector used to accept Word Clock reference.
13. 10M Input
This BNC Input Connector allows Pure2 to receive timing reference from an Atomic Master
Clock, such as the Antelope 10M/10MX to increase clocking accuracy. The atomic device
becomes the primary timing reference to provide better sample accuracy, more detailed
sound and even greater stability.
14. Digital Inputs
●S/PDIF Inputs
One Coaxial digital input on RCA connector using the S/PDIF connectivity standard.
●TOSLINK Inputs
One Optical connector using the TOSLINK connectivity standard.
●AES/EBU Input
One XLR connector-type input using the 110 Ω AES/EBU connectivity standard.

Pure2 User Manual 16
15. USB Hi-Speed
Hi-Speed USB (up to 480Mbits) port. The Pure2 uses an USB connector Type B and
operates up to 192kHz sample rate with custom Antelope drivers on both Windows and
macOS.
16. De-Jittered Outputs
●AES/EBU
One ‘jitter-free’ XLR connector-type output for compatible equipment using the 110 Ω
AES/EBU connectivity standard.
●S/PDIF Digital Output
One coaxial ‘jitter-free’ S/PDIF Output on RCA connector.
●TOSLINK Digital Output
One optical ‘jitter-free’ TOSLINK Digital Output for use with compatible equipment.
17. Word Clock Outputs
Eight Word Clock Outputs on BNC connectors.
18. Analog Inputs
A combo stereo pair of balanced XLR / ¼” TRS Inputs for connecting analog sources to
the Pure2.
19. Analog Outputs
A stereo pair of balanced XLR Outputs for feeding your analog chain from the D/A of the
Pure2.
20. Monitor Outputs
A stereo pair (2x ¼ TRS) of balanced outputs to connect different pairs of monitors.
21. Trim Adjustment Screws
Screws for manual signal trim adjustment for the monitor and analog outputs.

Pure2 User Manual 17
CONTROL PANEL
The Pure2 PC/Mac Control Panel application lets you adjust each aspect of the unit's
functionality, view volume metering, save and recall presets, and more. It's organized into
the following sections:
1. Function Strip
From left to right:
Standby/On Button
Toggles the unit between Standby and On states.
Sample Rate Selector
Drop-down menu to choose sample rate.
Clock Source Selector
Drop-down menu to choose clock source. The following choices are available:
●'OVEN' – Internal oven-controlled crystal oscillator.

Pure2 User Manual 18
●'W.C.' – External word clock reference generator.
●'Digital' – External digital input.
●'USB' – Slave to computer playback. Note that the unit is still clocked by its internal
oscillator in 'USB' mode.
Tab Selector
Choose from 'Main', 'Digital', 'I/O', and 'Settings' views.
Downsize Button
Reduces the Control Panel's screen size.
Help Button
Displays Control Panel version, hardware version, device serial number, and firmware
version. You can also launch the Firmware Update wizard to check for and initiate firmware
updates.
Minimize Button
Minimize the Control Panel
X Button
Close the Control Panel.
2. VU Meters
Virtual volume meters for the L/R analog and monitor outputs.

Pure2 User Manual 19
3. 'Main' tab
Features Monitor and Headphone audio source selectors, volume rotary controls and
buttons - 'Mono', 'Dim', 'Mute'.
4. 'Digital' tab
Contains the following drop-menus:
DIG IN SELECT
Choose the digital audio source - S/PDIF, Optical or AES

Pure2 User Manual 20
USB REC SOURCE
Choose the audio source for computer recording – Sine wave, A/D, USB Outputs 1 - 4,
Digital Input.
DIG OUT SOURCE
Choose the audio source for the digital outputs - Sine wave, A/D, USB Outputs 1 - 4,
Digital Input.
5. 'I/O' tab
Contains an output signal trim selector with 'Factory' or 'Manual' settings. Manual
adjustments are made from the adjustment screws on the unit's rear panel.
There's also a test tone generator with left and right channels for calibration and
troubleshooting.