Just thought I would post some pictures and comments on my new JH Audio JH 13 Pro (Freqphase) Custom IEMs.
I placed the order for these back in later November directly with JH Audio, taking advantage of their Thanksgiving weekend sale. My impressions arrived at their door on 10/12/12 and the IEMs arrived at my door on 15/01/13. I got the impressions done at Harley Street Hearing, London. This Audiologist is on JH Audio's list of recommended Audiologists in the UK.
My first attempts to get these things in my ears was a difficult and painful experience! There is quite a knack to inserting them. The learning curve continued for a couple of weeks while I persevered through considerable pain trying to master inserting and removing them.
I'm now at the point where I can insert and remove them gently and deftly enough so that once they're in they're comfortable to wear. They're a good, snug fit and I can't break the seal no matter what facial contortions I pull. Inserting and removing is unfortunately still painful though as they rub on the canal area when putting them in and taking them out. The more times I insert and remove, the worse the burning sensation gets. I've e-mailed JH audio for advice as I'm in a bit of quandary - once they're in all is well, it's just the insertion and removal process that's the problem. I use the 'twist and lock' method as shown in UE's useful YouTube video. I've been debating buying some ear lubricant as when my ears are a bit sweaty/greasy (pleasant I know!) insertion and removal is near pain free. The main cause of pain seems to be that once locked in, I have to press gently to slide the canal section fully in to the canal and this results in rubbing, which over time becomes very tender and burns. I've been perserving for some time in the hope my ears will 'toughen up' as I want to avoid a refit if possible. If anyone's got any advice on this particular issue I would be grateful.
They isolate very well, probably on a par with earplugs. This is great for flying, etc. Foot fall is a problem though, as is eating or if my heart's beating hard.
On to the sound. My previous IEMs where the Westone UM3X. I've been driving the JH 13's out of my iphone 4 headphone out, Google Nexus 7 headphone out and Fiio E17 DAC/Amp. All using FLAC. If there's one thing I've noticed about the JH 13s, it's how revealing they are of the source. The Nexus 7 has quite a lean, bass light sound, the Fiio E17 is fuller but muddier. The iphone 4 is the best of the three (by a small margin over the Fiio). I'm looking for a better Amp/DAC to drive the JH 13's as I sense they have more to offer than the sources I currently have available.
In comparison to the UM3X they're more neutral, transparent, extended at both ends and more detailed. I'm hearing a good deal more in the music, bass at levels lower than I've ever heard before and pin point treble. The soundstage is surprisingly wide for IEMs, probably better than many open over ear headphones I've heard. Instrument separation is also probably the best I've heard. As I mentioned, these IEMs are very neutral - I can't point point their particular character so far. If the source is full or lean then the JH 13s sound full or lean. If the recording is fantastic then the JH 13s sound fantastic. If the recording is crap then the JH 13s sound crap.
Click on the images for larger versions. The shells are translucent black.