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Despite the semi-open design coupled with a vented DD, isolation surprisingly is still above average for me — and I never experienced any driver flex whatsoever.
FiiO implemented the replaceable tuning nozzle in the flagship FD5 that is being followed here by the FD3.
The FiiO FD3 has the upper hand for both subbass and midbass response and is superior to the Final Audio B2 in terms of subbass depth, intensity and rumble.
The upper treble region of the FiiO FD3 is slightly less pronounced and detailed compared to the lower treble and upper midrange area. The FD3 offers also two different Interchangeable Sound Tubes like the FD5, one bass and one balanced sound tube. The pin-point precision of machinery and the delicate touch only possible by human hands come together to create a phenomenal piece in the FD3 Pro. Treble extension does improve with the black nozzle but treble sounds peaky and unnatural to my ears. to reduce unneeded distortion yet also surprisingly light, allowing the driver to have excellent transient response.There is great texture in the sub-bass and it’s quite energetic and goes quite deep to fill your cups with a smile . The latest FD3 series of IEMs boasts a large 12mm dynamic driver unit with full-DLC diaphragm material. Still a quad-driver, but this time with a 2BA + 2DD configuration and a semi-open design to accommodate the massive 12mm drive, which surely came from the FD5.
When I was reviewing Earsonics ONYX, I noticed a really interesting presentation that has tons of textures, but presents them smoothly so that they are never fatiguing, and all music is harshness-free and enjoyable. Tough the Moondrop Aria feel from another league to my ears in both technicalities and tonal balance, its cold mature tonality (with sub bass twist) might not be as appealing as more energic and fun V shape of FD3. It uses pretty much the same exact shape both utilizing prism baffles and tuning nozzles with a semi open design.Tesla magnetic flux density paired with an ultra-fine copper-clad aluminum Japanese Daikoku voice coil. Female vocal are more fowards, with better timbral balance, but male vocal are thinner yet again more clean-lean. Still, they tend to extract well both male and female vocal, male vocal being a bit more fowards and full bodied. As already mentioned earlier in my review the pro version comes with an upgraded 8-stand cable with interchangeable termination plugs. Fiios commitment to the end user experience shows as even their base model of the FD3 includes a premium accessories package that you would not expect.
To Note : My review is strictly for Fiio FD3 Pro and strictly based on my use with Hiby R3 Pro Saber DAP. The inclusion of the MMCX tool is extremely welcome, and in my opinion other manufacturers should take a page from FiiO’s book here as it makes life significantly easier when changing cables. The comfort is equal between the two, with a slight edge going to FiiO for their excellent rounded inner part on FD3. While using the treble nozzle, I have found the treble to be quite peaky and harsh and hence I have used the bass nozzle throughout the review.FD3 is musical with guitars, and has good staging, but also has a ballsy bottom end that adds impact and punch to music. An acrylic carry case, a tool for MMCX cable replacement, 6 bass eartips, 6 balanced eartips, 6 vocal eartips, 2 foam tips, a cleaning brush. DLC(Diamond-Like Carbon) is a highly rigid material that also has an extremely lightweight structure that reduces unnecessary vibrations and. Another winner from FiiO that outperforms the competition and gets highly recommended as a great entry level budget iem. What this cable does is actually makes the treble filter listenable for maximum sparkle and shimmer.
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