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Flat (Bypass)
In this mode the equalizer is bypassed for an unchanged frequency re-
sponse. When using an analog input source, bypassing the equalizer
maintains a 100% analog signal path. For digital audio sources, the equal-
ization section of the digital signal processor is simply disabled.
Audio
Output Gain
MENU > AUDIO > OUTPUT GAIN
Select a high or low level output gain.
Limiter
MENU > AUDIO > LIMITER
The limiter protects your ears from unexpected volume spikes at the ear-
phone output.
Input Pad
MENU > AUDIO > INPUT PAD
The input pad feature is available when the amplifier is receiving analog
audio in line input mode. The pad attenuates the analog input signal to
prevent clipping from high output audio sources. Enable the pad when the
audio meter indicates clipping.
• Begin with the -10 dB pad. If clipping persists, use the -20 dB pad.
• Attenuate the source volume if the signal continues to clip with the -20
dB pad engaged.
Sample Rate
MENU > AUDIO > SAMPLE RATE
Sample rate information is displayed here.
Utilities
MENU > UTILITIES
Display
Adjust screen brightness and timeout length. Flip the display up or
down for visibility in either direction
Battery Info
Provides battery status: percentage charge, cycle count, temperature
Factory Reset
Restores all settings to the factory default
Firmware
Displays software version information and allows for updates
Hardware
Contains device data for reference and service
Enable / Disable Charging
When connected to a USB source, the amplifier automatically
recharges the battery. Utilize the disable charging feature when you
don't want to drain your laptop or USB source. The next time you turn
on the amplifier, it will default to enable charging.
Firmware
Firmware is embedded software in each component that controls func-
tionality. Periodically, new versions of firmware are developed to incor-
porate additional features and enhancements. To take advantage of
design improvements, new versions of the firmware can be downloaded
and installed using the Shure Update Utility tool. Software is available for
download from http://www.shure.com/americas/products/software/utilities/
shure-update-utility.
Updating the Firmware
CAUTION! Ensure that amplifier power remains on during a firmware up-
date. Do not turn off the amplifier until the update is complete.
The Shure Update Utility will find the latest versions of firmware. You can
download the updates to your computer. Once the download is complete,
the amplifier automatically begins the firmware update, which overwrites
the existing firmware.
1.
From Shure Update Utility software, click the Updates Available
button.
2.
To download firmware to your computer (but not to devices), check
the box next to the updates you want and select Download.
3.
Connect the amplifier to your computer with the USB cable.
4.
From the amplifier menu, select UTILITIES > FIRMWARE >
ENABLE FW UPDATE
Note: ENABLE FW UPDATE must be enabled in order for the firmware update to
work.
5.
Confirm that you want to download the latest firmware to the
amplifier.
Note: The battery should be charged before updating firmware. Do not
attempt to update firmware if battery percentage is less than 10%.
Lithium-ion Rechargeable Batteries
Storing Batteries
To avoid degrading battery health, keep the storage temperature range
between 10°C to 25°C (50°F to 77°F).
Battery Repair and Replacement
Lithium-ion batteries have no "memory effect", and instead experience a
more linear reduction in capacity. Contact Shure Service and Repair to
replace the batteries when the capacity is no longer acceptable.
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