Extreme Bass:
When it said “extreme bass”, it wasn’t kidding. The base on these is absolutely ridiculous. Bowel enducing, impactful, almost painful bass. Whenever there is even a touch of bass, it starts farting out earthquakes of deep bass. It comes out when uncalled for almost everytime. Really, despite the monstrous bass, I really couldn't find a way to really enjoy the extreme plates.
Enhanced Bass:
This is when things get good. A large amount of bass is cut from the extreme bass, giving it more balance.The bass suddenly tightens up. The treble is nice and clear but unfortunately there is lots of sibilance that comes with the treble. Most of the time, it is fine and out of the way, but when it shows up, things end up very bad. Listening the Lil' Wayne's extremely squeaky voice in " 6 foot 7 foot" was nearly unbearable. Despite the sibilance, I feel that this is still very good sounding with a slight V- Shaped sound sig with slightly recessed mids and vocals and a powerful low end and treble. If only it were less fatiguing...
Neutral Bass:
Well, yes, the bass is very neutral on these and clarity is very decent. Mids are much less recessed and bass is well contained. The sibilance is much lessened. These (obviously) are the most balanced of the three, offering excellent clarity. However, if you are looking for tip-top clarity, these aren't your top choice. These are decent, but if clarity and balance is all you are looking for you are better off with something like the HiFiMan RE0 and the Sunrise Xcape or maybe even Mee's own A151. In the end, these still are quite clear, but it isn't at the top of the competition.
Verdict:
Yes, these can be muddy bass monsters, but at the same time these have the ability to have great clarity. You can think of these as an "all rounder", or a "starter IEM.". You can learn which your favorite sound preference is, or that more bass isn't always better. In the end though, while these do perform extremely well, won't be in the top of the competition.