KZ Castor Pro vs Tangzu Wan’er SG, and this is the kind of question that I’ve been getting frequently from a lot of people. I think people are asking this because you have Tangzu Wan’er SG at ₹1690 for the non-mic variant, and you get KZ Castor Pro at ₹1590 for the non-mic variant in the base version. Both have very similar pricing.
First of all, detailed unboxing and in-depth reviews of both these IEMs will be linked here.
I also want to say that since the KZ Castor Pro is already there, you don’t need to go with the original KZ Castor. I have a comparison these two IEMs linked in the review section, so you can also have a look at it.
KZ Castor Pro vs Tangzu Wan’er SG
| Feature | KZ Castor Pro | Tangzu Wan’er SG | Better Choice |
|---|---|---|---|
| Price | Around ₹1590 | Around ₹1690 | KZ Castor Pro |
| Design | Premium and futuristic | Simple resin design | KZ Castor Pro |
| Cable | Sturdy but ordinary-looking | More premium-looking | Tangzu Wan’er SG |
| Sound Quality | Powerful, energetic, and bass-focused | Smoother, richer, and more refined | Tangzu Wan’er SG |
| Gaming | Normal soundstage and imaging | Wider soundstage and more precise imaging | Tangzu Wan’er SG |
| Best For | Bass lovers, premium design, and sound customization | Balanced music listening and competitive gaming | Depends on use |
| Overall Winner | Strong build and tuning flexibility | Better overall sound refinement and gaming performance | Tangzu Wan’er SG |
Design & Build Quality
First of all, in terms of design and build quality, the KZ Castor Pro feels very premium and futuristic thanks to its overall look and feel.
It has a zinc-alloy faceplate, and the rest of the part is made of resin. Anyone looking at these IEMs would pay attention to that small hole on the faceplate and all the tuning switches. It gives you the impression that it has many features and controls. The overall look and feel of these IEMs is much better.
On the other hand, if you’re looking at the Tangzu Wan’er SG, these IEMs look very normal. They have a resin finish, and nothing feels out of the box. You get a very general finish with the Tangzu Wan’er SG.
Cable Quality Comparison
The next thing is the cable. First of all, you have very impressive cable quality with the Tangzu Wan’er SG.
You get this kind of cable that looks very premium and expensive. It also looks like a very good-quality cable, so I’m happy with it.
On the other hand, if you’re looking at the cable from the KZ Castor Pro, every KZ earphone nowadays comes with this pale brown cable.
I would not say anything negative about the cable’s sturdiness; it feels very sturdy. However, the look, feel, and finish of this cable are not what I expected.
Comfort & Fit
Now, in terms of comfort and feel when you are wearing them, the KZ Castor Pro has a slightly larger housing and some added weight.
On the other hand, the Tangzu Wan’er SG is very lightweight and compact. The best part is that even though the KZ Castor Pro has a larger housing and a design with some heft, it still does not feel heavy on the ears because the fit is so nice.
Both these IEMs have very good comfort and fit. However, the KZ Castor Pro has slightly more width so that it will protrude slightly from the ears.
On the other hand, the Tangzu Wan’er SG will sit completely flush with the surface of the ear. This is something that you need to know.
Technical Specifications
Regarding the technical specifications, the Tangzu Wan’er SG has a sensitivity of around 107, while the KZ Castor Pro has around 103.
The impedance of the Tangzu Wan’er SG is around 20, while the KZ Castor Pro’s is between 16 and 22. Both have very similar impedance and sensitivity values.
Driver Configuration
When it comes to the drivers, the KZ Castor Pro has a 10 mm driver paired with a 10 mm driver. It has two dynamic drivers. One driver may be responsible for handling bass frequencies, and the other one for mids and highs, or mids and low frequencies.
On the other hand, the Tangzu Wan’er SG has a single 10 mm dynamic driver.
On paper, the KZ Castor Pro might seem more advanced. However, the Tangzu Wan’er SG features a 10 mm dynamic driver with dual cavities and a PET diaphragm.
This is the kind of driver that you will usually see in a slightly advanced or expensive IEM. It will be very interesting to see how these compare.
Sound Quality Comparison
First, I would like to compare these two IEMs based on their overall sound quality and frequency response.
I will not go into the switch combinations on the KZ Castor Pro in depth, as you can do that yourself. You can create plenty of switch combinations as you want.
Keeping all those switches down will reveal the exact nature of the drivers you have on the KZ Castor Pro. We will compare it straight away with the Tangzu Wan’er SG.
KZ Castor Pro Frequency Curve
First of all, if you look at this particular graph, the grey line is the Harman target curve, and the green line is the curve from the KZ Castor Pro.
You will notice that the curve on the KZ Castor Pro starts somewhere around 65. However, if you watch the same curve on the Tangzu Wan’er SG, it starts at a level above 65.
This means that, originally, the Tangzu Wan’er SG will give you a much better kick than the KZ Castor Pro.
As you move slightly forward in the curve, you will notice that all the bass on the KZ Castor Pro is slightly above the Harman target curve.
This means that the bass frequencies on the Castor Pro will be more prominent and will stay there longer.
Tangzu Wan’er SG Frequency Curve
On the other hand, when you’re looking at the Tangzu Wan’er SG, you will notice that the curve is going very much parallel to the Harman target curve.
As you move further forward, the curve blends very well with the lows and mids.
On the other hand, when you are looking at the curve from the KZ Castor Pro, in the low and mid frequencies around 300 to 500, the bass drops too fast compared to the Tangzu Wan’er SG.
Bass & Vocals
This means that if you’re listening to a song with a lot of bass at the beginning and the vocals suddenly kick in, the bass and vocals will not have a good connection.
I was testing plenty of songs, and I felt that the way the vocal frequencies kick in is very noticeable on the KZ Castor Pro.
You will notice that something has changed in how these IEMs respond. That is something very detailed that I’m mentioning at this moment.
On the other hand, if you look at the Tangzu Wan’er SG, even though the bass frequencies are going on and some vocal frequencies kick in, they blend very nicely in that 300 to 500 range.
That is something I noticed, and it is a key difference between both these IEMs.
Treble Performance
On the other hand, if you are talking about high frequencies, especially those around 8 kHz, they are not much more prominent on the KZ Castor Pro.
On the Tangzu Wan’er SG, the 8 kHz frequency range covers instruments such as violins and guitars, high-pitched sounds, whistles, babies crying, and similar sounds.
All those kinds of sounds will be very prominent.
You can hear the high and low frequencies blending very nicely with the mids. All the sparkle in the 8 kHz frequency range will also be heard very nicely.
That is why a lot of people like Tangzu Wan’er SG, and why it is so popular.
Power & Bass Comparison
I also noticed that the 10 mm plus 10 mm driver combination feels like more horsepower packed into a single unit.
When you talk about the Tangzu Wan’er SG, it does not have the same amount of horsepower. However, the dual cavities and the refinement in the bass on the Tangzu Wan’er SG are much better.
Gaming Performance
When it comes to gaming, I would say the overall surround sound experience from the Tangzu Wan’er SG is much better.
If you listen to the KZ Castor Pro, it has normal bass, and all the bass is heard right here.
When it comes to the Tangzu Wan’er SG, it is not heard only here. It is heard across a wider area. The bass starts kicking in from one side, while the vocals are right in the center.
When you talk about imaging and soundstage, it is very precise.
While playing games like BGMI, you can target your opponent precisely thanks to the graphics.
It has good stereo performance, and everything that is going on feels clear. It feels like the Tangzu Wan’er SG produces more sound, and the sound is much richer than that of the KZ Castor Pro.
That can be a major difference for a lot of people, especially those who are gaming.
Which IEM Would I Personally Choose?
If you talk about me personally, I would prefer the Tangzu Wan’er SG over the KZ Castor Pro.
However, if you think that EMs look very futuristic and have a well-built design, you can go with the KZ Castor Pro as well. It is not a bad choice.
