[Note: the thread starter and title have been changed.]
Note that most of the links below go to impressions of the old non-Freqphase version.
Addressing general concerns about JHA & JH13s
JH13 pro impressions post list - this thread's 'Cliff notes'
JH13 meta impressions list
JH13 pictures thread
Audiologist impressions thread:
Larry aka headphoneaddicts 3 way power review: