Has anyone remolded W40 IEMs? Looking to do so. Wanting to hear some thoughts.
I just had some reshells done- TripleFi10 and Westone 4. I'll start with the W4.
From my personal experience and from what I've read, sonically the W4 is very much like the W40 if not the same. Whatever your thoughts are on that, the effects of the reshell should be applicable to either. Cosmetically, Inearz did a good job. There are maybe a few small bubbles or specks in the shells, but nothing that would remotely affect the durability or sound. The outside of the shells are gem-like smooth. I have similar if not worse 'artifacts' on my UERMs- it's just a fact of life. I'm actually impressed by the craftsmanship of the Inearz. With regards to fit, as a side note I had the W4s made within about a month of the TripleFis from the same impressions- you get them back each time. Both reshells fit wonderfully with no refits necessary.
Westone 4
As for the sound, let me first say that except for the W60 and W80, I find the universal Westones almost unlistenable with the stock silicon tips- both the older opaque gray ones and the newer 'Star Tips'. For me they sound way too muffled and rolled-off with these tips; and this is on top of their already warm house sound. So on both of my Westones (W4 and Pro30) I only use Shure Olives. With these I get a good amount of sparkle and reasonable amount of upper midrange/ lower treble. With that said, I find the reshell of the W4 to be tonally somewhere between the silicon tips and the Olives. I'm only relying on my own auditory memory which I have little faith in. But if I had to rank the sound
quantity above ~2khz, with the silicon tips at '0' and the Olives at '10', I'd say the reshells are at about '7'. So if you use the silicon tips, I would guess that the reshells will be a bit brighter. But even being brighter they will
never be sibilant or harsh- ever. The low frequencies, comparing to the Olive-tipped universal, are very similar with the reshell being a bit cleaner and maybe extending a bit further down. It's a difference in refinement; so if you think the W4/40 is bass light and were hoping this would change that, look elsewhere.
In summary, the sound is a bit warmer (vs. w/Shure Olive tips) but definitely still a W4. Despite already having a good fit in universal form, the convenience of not having to deal with tips and the ability to customize your reshells made this an easy choice for me.
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Now for the TripleFi, this was always something I've wanted to do. And having a few pairs of these, I had no hesitation in doing this to at least one of them. As with the W4, the craftsmanship on this reshell is first-rate. The dual-bores are clean and symmetrical. (Note that the W4s are single-bore like all Westone universals; and thus the custom reshells are also single-bore as they should be.) Although notorious for their poor fit in universal form, I manage to get a decent fit on the UEs with the stock silicon 'M' tips; and a slightly better fit when worn reverse style, swapping the L and R ear pieces. Of course with the reshells as mentioned earlier, fit with these is great.
UE TripleFi10
With regards to sound, as with the W4 (w/Shure Olive tips), the highs take a bit of a hit on the reshells here. Some who think the UEs have a bit too much of a vee sound might enjoy this. For me, the change takes away a bit of the fun sound that the universals have. But in exchange the reshells give you something a bit more 'mature' sounding and better for long-term (2-3 hours) listening. As with the W4 reshell, the TripleFi's bass seems to be a tiny bit cleaner here.
The other thing that the TripleFi is known for is sensitivity to high output impedances. The highs usually get muffled the further away from 0Ω you go. I can easily hear this by comparing the sound out of my Leckerton UHA-6Sii (<0.5Ω) to that out of my Samsung S7 (~5.6Ω). So to illustrate the difference between the universal and reshell, I would say that the sound of the reshelled TripleFi out of the Leckerton is similar to that of the universal TF out of the S7. It's not insignificant. In fact if you like the sound of the TripleFi as it is (and you use the silicon tips), I would be hesitant to recommend reshelling them. But if you think the TFs sound a bit hot at times and/or you use foam tips and like the sound of that, then I would guess you'll probably like the sound of the reshell. To be clear, I am merely using the OI comparison to illustrate the difference in sound between the universal and reshell- something you might be able to do or relate to. I suspect the actual difference in sound comes from the length, curvature, and perhaps positioning of the tubes. As far as I know, these reshells simply carry everything over from the universals unchanged including their filters.
So like the W4 reshell, when you do this there is a good chance that the sound will change depending on the tips you currently use. Also like the W4, despite that change, it still sounds like a TripleFi- just a bit more relaxed and perhaps disciplined. If you're okay with that, the rest (fit, craftsmanship, personalization, $value, etc.) makes this an easy decision as well.
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With regards to the overall Inearz experience, I thought it was fantastic. I submitted my order via email and sent in my impressions. Kaysen was always responsive to my questions. The wait time was what I was told and therefore expected- about 4-5 weeks. For the level of quality, service, options, and pricing, I can
easily recommend Inearz for reshells. I'm probably going to order some of their in-house customs since they really seem to have my fit nailed, and they somehow manage to keep their pricing down to earth-levels despite what many of the other custom IEM manufacturers are doing.
Also, if you live in the SF bay area and are looking for a place that does impressions, I can recommend California Hearing Center in San Mateo. Lais Ama was the person who did my impressions and she really seemed like she knew what she was doing. They currently charge $75, which isn't cheap. But it's probably better to get it done right the first time, as sending in poor impressions to any CIEM manufacturer can make this whole affair a painful one in more ways than one.