Pros: DEEP Substance-giving sub-bass, Extended treble, Sweeeet but clear mids, Wide Soundstage
Cons: Slightly Recessed Mids, Straight Jack, Very fit and tip dependant, driver flex
This will not be the most professional review you'll read. I will offer my experience of only the sound and build quality of these IEMS from an average consumer's point of view.
Just to give some reference, I'm currently rocking the Sony MDR-EX650AP as my daily earphones. For being earphones with balanced drivers at $60, they really have no weaknesses to speak of , which is why they recieved the "Product of the year award 2014" from What Hi-fi.
I ordered the HiSoundAudio Wooduo 2 because I wanted something with a little more oomph.
So here is my review of it:
Build quality is really good. It's not amazing, but it's above average i'd say. The housing as well as the cable feel quite sturdy and durable. I've heard complaints about the nozzle coming loose
and I can see that happening if manhandled. The jack, while straight, is of very good quality, very sturdy with a denser yet springy rubber strain relief. There is some cable noise though.
Sound & Function:
These sound TERRIBLE if you don't manage to get a good, sealed fit. If you cannot find a good fit, the bass is nonexistent, also driver flex is present in these. I guess this is the curse of some if not most dynamic drivers.
It probably varies from one person to another, but I personally found short tips with a wider cylinder diameter, allow for easier dispatch of the pressure waves (bass) to hit my eardrum, and not the wall of my earcanal which eliminates the bass completely. You want the nozzle to be as close to your eardrums as possible.
If you get a good, sealed fit;
I went on YouTube and put the words "Bass Test" in the search bar. I clicked on one of the links, and I just melted basically.
My eardrums felt like I was sitting in a car equipped with x2 12" Subs blasting at full volume.
The bass goes deeper than the Mariana Trench. It's the kind of bass that will tickle your eardrum and also part of your ear,
there's mid-bass punch as well but not close to being in the same league as the sub-bass honestly. You won't get that outer thump that you'll come to fear with each impending beat (which very often comes with muddyness), here it's more of a steady vibration in it's place that gives substance to mainly string instruments and male vocals. Drums especially are insanely impactful and tight if you have a DAC plugged in.
Other reviewers have said that a DAC doesn't do that much for these IEMS, but I disagree. The bass becomes better controlled and a lot tighter. I think the mids come out better too.
The mids are clear and has weight behind them thanks to the sub-bass, but do get increasingly recessed in proportion to volume increase because the impact of the bass also increases. However, I do not find it to be a major problem at all, as mids are only slightly recessed at normal listening volume.
The treble is what they call "sweet", meaning the treble is rolled off at the top of the spectrum granting a more relaxed listening experience,
at the cost of some high frequency extension and resolution. They've tuned it like this because in order to get the bass quantity you really must crank up the volume,
there's no way around that. Now if the treble had not been "sweet", they high frequencies would become sibiliant (of which there is practically none by the way) at higher volumes which would induce fatigue and potentially even pierce your ears.
The soundstage is really wide.
I really love these IEMS. They're so much fun, the bass ADD so much to the whole sound.
However, any piece of music that has a really fast drumbeat will cause the bass to take over basically.
For basically everything else, these are really good.
For the price, I REALLY cannot fault these in terms of sound quality. The only reason why I'm not giving these 5/5 is because of all the problems outside of the sound itself.
They are 2 steps above my Sonys.