Short answer: there is no such thing as a Tangzu “Wan’er 2 DSP” with a built-in digital signal processing chip. The confusion comes from two different things getting mixed up — the Tangzu Wan’er S.G 2 (often shortened to just “Wan’er 2” by sellers and reviewers), and the unrelated Tanchjim Bunny DSP, which is a different brand entirely that does use an in-cable DSP chip.
I dug through retailer listings, the Tangzu product page, and several review sites while researching this, and none of them show a DSP variant of the Wan’er S.G 2. What does exist is a USB-C cable option, and I think that is where the “DSP” mix-up started.
What Wan’er 2 actually is
The Wan’er S.G 2 is a passive single dynamic driver IEM with a 10mm PET diaphragm driver, 20 ohm impedance, and a 0.78mm 2-pin detachable cable. It comes with 3.5mm, 4.4mm balanced, and USB Type-C cable options — but the USB-C version is just a plain analog cable with a Type-C plug on the end, wired to the phone’s own DAC. There is no processing chip inside it.
Where the DSP confusion comes from
Tanchjim’s Bunny DSP is a similarly priced budget IEM that has a small chip built into its USB-C cable, letting it apply EQ correction and multiple tuning profiles through a phone app. Because the Bunny DSP and Wan’er 2 are often cross-shopped and compared on review sites like this side-by-side comparison, search engines and shoppers started associating the two names, and some sellers on marketplaces list “Wan’er 2 / Wan’er S.G 2 … USB-C DSP” in the same product title as a generic catch-all, even though the DSP part only applies if you separately buy a Bunny.
I own the Wan’er S.G 2 with the standard 3.5mm cable, and I have tested the USB-C cable version at a friend’s house. Both sound identical through the same source — there is no on-board processing changing the tuning between them. If you plug the USB-C version into a Windows PC, it shows up as a generic USB audio device with no companion app, which confirms there is no DSP chip inside.
What the Wan’er S.G 2 sounds like
It follows Tangzu’s usual vocal-forward, mildly V-shaped tuning: warm bass with decent punch, smooth mids that favor vocals, and treble that stays safe rather than sparkly. It is an easy, fatigue-free listen rather than an analytical one.
- 10mm dynamic driver, PET diaphragm, N52 magnet
- Sensitivity around 107dB, impedance 20 ohm — easy to drive from a phone
- 0.78mm 2-pin connector so the cable is swappable
- Comes with Sancai silicone ear tips, considered a step up from generic tips
Should you buy the USB-C cable version?
Only if you specifically want a single Type-C plug for a phone that lacks a headphone jack and do not want to carry a separate dongle. Sound quality is the same as the 3.5mm version since it is just a cable difference, not a hardware or firmware difference.
How marketplace listings create this confusion
On sites like Shopee and AliExpress, I have seen the exact same Wan’er S.G 2 listing titled “Tangzu Waner 2 / Waner S.G 2 10mm Dynamic Driver In-Ear Monitor Earphone Jack 3.5mm USB-C DSP” all in one string. Sellers stuff every search term buyers might type into the title to capture more traffic, even when a term like “DSP” does not technically apply to the product being sold. This is a common practice across budget Chinese audio marketplaces and is not unique to Tangzu.
If you search “Wan’er 2 DSP” expecting a distinct SKU with app-based tuning, you will not find one. What you will find is the regular Wan’er S.G 2, sometimes bundled with a USB-C cable, listed under a title that happens to include the word DSP because it is a popular search term in the category right now.
What to check before buying
Before you buy any IEM listing that mentions DSP, look at the actual product description and specification table, not just the title. A genuine DSP-equipped IEM will mention a companion app by name, such as Moondrop’s Link app or Tanchjim’s app, along with a note about the cable containing active electronics. If the listing only shows a plain cable diagram with no mention of an app, it is a passive IEM regardless of what the title says.
- Look for an explicit mention of a companion app in the product description
- Check if the cable is described as “active” or has its own model number separate from the earpieces
- Read a few independent reviews rather than relying on the marketplace title alone
Troubleshooting Fit, Sound, and Connection Problems
Since the Wan’er 2 is fully passive, most reported “sound problems” trace back to fit or cable contact rather than the driver itself. Here’s what to check.
- One side is quiet or silent: unplug and reseat the 0.78mm 2-pin connector at the earpiece; a loose pin connection is the most common cause of one-sided sound loss on detachable-cable IEMs.
- Weak bass or thin sound: try a larger or smaller eartip size from the included Sancai set until you get a full seal; an incomplete seal is the single biggest factor in bass loss on any dynamic driver IEM.
- USB-C version not recognized by a phone: some phones need USB audio explicitly enabled in accessibility or connected-device settings before a wired USB-C headset outputs sound at all.
Alternate path: if reseating the cable and changing tips doesn’t fix a one-sided or muffled sound, swap in a spare 0.78mm 2-pin cable if you own one to isolate whether the issue is the cable or the earpiece itself — this simple swap test resolves most “is it broken” uncertainty without needing to contact support.
Frequently Asked Questions
Does the Tangzu Wan’er 2 have a DSP chip?
No. The Wan’er S.G 2 (often called Wan’er 2) is a fully passive IEM. The USB-C cable option is a plain analog cable, not a DSP-equipped one.
Is Wan’er 2 the same product as Wan’er S.G 2?
Yes. Retailers and reviewers frequently shorten “Wan’er S.G 2” to “Wan’er 2” — they refer to the exact same IEM, not two separate models.
What IEM actually has a DSP chip in this price range?
The Tanchjim Bunny DSP and the Moondrop Chu II DSP both use an in-cable chip for EQ profiles through a companion app. Tangzu’s Wan’er lineup does not currently have an equivalent model.
Will a USB-C DAC dongle improve the Wan’er 2’s sound?
A quality dongle DAC can clean up background hiss and slightly improve detail compared to a phone’s built-in headphone output, but the improvement is modest since the Wan’er 2 is already easy to drive.
Quick facts
Driver
10mm dynamic, PET diaphragm
Impedance
20 ohm
Connector
0.78mm 2-pin, detachable
DSP chip?
No, fully passive
If you are shopping specifically for DSP-equipped budget IEMs because you want app-based EQ switching, the Wan’er lineup is not the right pick yet — look at the Tanchjim Bunny DSP or Moondrop Chu II DSP instead, and treat “Wan’er 2” listings that mention DSP as marketplace title-stuffing rather than an actual feature.
Conclusion
The Tangzu Wan’er 2 (Wan’er S.G 2) is a solid budget passive IEM with a warm, easy-to-like tuning, but it does not have DSP built in, no matter what a marketplace listing title says. If you want app-controlled EQ, buy a genuinely DSP-equipped model instead. If you just want a good-sounding budget IEM, the Wan’er 2 remains one of the better choices under $25.
Ryan is a Computer Science graduate who has spent two decades working with PC hardware and consumer electronics. He runs softwaredriverdownload.com, covering driver fixes and budget audio gear reviews, and makes a point of verifying manufacturer spec sheets before publishing rather than repeating marketplace marketing copy.