My Astell&Kern Has Frozen And/Or Stopped Responding; How Do I Reset The Ak100; What Are The Recommended Headphones Or Earphones For The Astell&Kern - Astell & Kern AK100 Introductory Manual

o If the volume wheel does not correctly adjust volume levels even with
volume lock turned off, the Astell&Kern may be malfunctioning. Please
contact your nearest iriver service center for further assistance.
 7. My Astell&Kern has frozen and/or stopped responding.
o If your Astell&Kern has stopped responding and does not function
properly, please try restarting the device by pressing and holding the
"Scroll Up (∧)" and Power buttons for 7 seconds. This process will reset
the Astell&Kern to its default settings.
o Resetting the Astell&Kern does not delete the saved data from your
device.
o Note: Please do not reset the Astell&Kern during normal operation.
Doing so can cause damage to the internal memory.
 8. How do I reset the AK100?
o If the Astell&Kern becomes unresponsive, press and hold the power and
the "Scroll Up (∧)" button at the same time for 7 seconds to reset.
 9. What are the recommended headphones or earphones for the Astell&Kern?