When comparing FiiO EX1 Aerospace Nanotech Titanium Diaphragm In-Ear Monitors vs Tin T2, the Slant community recommends Tin T2 for most people. In the question“What are the best earbuds that are durable enough to be thrown in bags/pockets but still sound great and are under $100?” Tin T2 is ranked 5th while FiiO EX1 Aerospace Nanotech Titanium Diaphragm In-Ear Monitors is ranked 6th. The most important reason people chose Tin T2 is:
These headphones are really good at creating complex sounds (for a $50 headphone).
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Pros
Pro High quality built wire
High purity OFC copper, intertwined with 250D Kevlar fiber strands, ensuring superior sonics as well as great strain resistance and longevity.
Pro Clarity
These headphones are really good at creating complex sounds (for a $50 headphone).
Pro Replaceable MMCX cable
This is pretty common for even budget earbuds/IEMs these days, but it's still a feature that deserves to be called out when a lot of mainstream earbuds don't have this feature. It should be an unforgivable sin to not have a replacable cables at this point due to the ubiquity of the feature and for how common it is for the cable of a set of headphones you use with your phone to fail.
Cons
Con Vocals slightly shouty
This can be more accentuated before adjusting according to the set of tips, but it's definitely present. For an example of this, try listening to "Unknown Brother" by the Black Keys on a few sets of headphones. In that song Dan Aurbach is singing very emotionally, but isn't quite shouting. Headphones with shouty vocals will present it as him shouting. This is due to a very mild amount of distortion in the midrange frequencies.
Con Bass slightly lacking
Most people aren't going to see this as a true con as what makes these special is that they have a very even, neutral response for the budget sector of headphones.