Tiandirenhe TD15
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Review of Tiandirenhe TD15:
Hello, hello! Tiandirenhe TD15 - entry-level IEM from the little-known company Tiandirenhe. According to the creators, these IEMs are basshead with a V-shaped tuning, ergonomic design, and attractive aesthetics.
From what I understand, Tiandirenhe is a new Chi-Fi brand aiming to produce basshead IEMs, a variety of eartips, and audio cables.
Tiandirenhe TD15 is a single dynamic driver model available in two versions: with and without an additional vent near the nozzle. Additionally, for just $2 more, you can get a cable with a microphone.
As a fan of powerful bass, I’m excited to test these IEMs and let you know whether this set truly lives up to its basshead promise.
I would like to thank Tiandirenhe Official Store for providing the opportunity to test and review this product.
Disclaimer: My review is my personal, honest opinion about the product. I don't receive any income for conducting reviews and I don't participate in any affiliate programs.
You can purchase the Tiandirenhe TD15 from:
- Tiandirenhe official store: https://www.aliexpress.com/item/3256806481461674.html?
- 1DD Driver Configuration;
- Impedance: 16Ω;
- Sensitivity: 109dB;
- Frequency response range: 20Hz-20kHz;
- Connector: 0.78mm 2-pin;
- Cable material:4 strand Silver-plated earphone cable;
- Price:25$.
- IEM itself;
- 2 pin 0.78mm 4 strand Silver-plated earphone cable, 1.2m length;
- 4 sets, 7 pairs of eartips: 4 pair - White standard eartips (S / M / M / L), 1 pair - Double eartips, 1 pair - pre-installed eartips, 1 pair - foam eartips
- Carrying case.
Tiandirenhe TD15 comes without a box, packaged instead in a black, sturdy case. The front of the case features the company’s name.
The case itself has a semi-circular shape and is quite spacious. Upon opening it, I found several small plastic bags with items inside. Unfortunately, I didn't find any instructions or specifications.
The case itself has a semi-circular shape and is quite spacious. Upon opening it, I found several small plastic bags with items inside. Unfortunately, I didn't find any instructions or specifications.
Tiandirenhe TD15 is made of resin using 3D printing. The resin is transparent, allowing you to see the dynamic driver and the tube leading to the nozzle.
The faceplate features a reflective gradient element that fades from green to bright orange, along with the company’s gold “Tiandirenhe” lettering. Combined with the golden hue of the resin, the design looks stunning and is sure to catch attention with its color-shifting effect.
At the back is a fairly long and wide brass-colored nozzle with a mesh inside. I appreciate that there is no additional dampening material behind the mesh, which could hinder sound transmission.
On the side of the shell, there is a small 2-pin 0.78mm connector.
During the time that I have been using the IEMs, I have not had any issues with the build quality. All the parts are carefully made and I have not had any complaints about the build.
The shape of Tiandirenhe shells is ergonomic yet highly unusual. These are quite large and hefty shells, weighing around 8 grams each. Tiandirenhe TD15 features some unusual internal curves, which make this set uncomfortable for people with small or medium-sized ears. Additionally, the isolation is poor due to the weird angle of the nozzle.
The nozzle is long and wide, but its flawed design prevents a snug fit and proper noise isolation.
As a person with small ears, I found it a problem to find suitable eartips, and even then, this set caused discomfort during extended listening sessions.
The included cable is of decent quality. It is a thin, flexible, soft, and lightweight cable made of oxygen-free copper, coated with a silver-colored PVC material, and 1.2 meters long. One end features a 3.5mm gold-plated stainless steel connector, the middle has a splitter, and the other end includes ear hooks and a 2-pin 0.78mm plug with R/L channel indicators.
I appreciate the build quality of both the ear hooks and the cable itself, as well as its fittings. Therefore, I think it’s a great cable for budget IEMs and doesn’t require replacement.
Additionally, you can purchase this cable separately from their store.
I appreciate the build quality of both the ear hooks and the cable itself, as well as its fittings. Therefore, I think it’s a great cable for budget IEMs and doesn’t require replacement.
Additionally, you can purchase this cable separately from their store.
The Tiandirenhe company offers a wide variety of eartips to suit different preferences.
Let’s take a closer look:
- 4 pairs of standard white eartips (S / M / M / L): These eartips provide a balanced and neutral sound without emphasizing any particular frequency range.
- 1 pair of blue foam eartips: They offer a tighter fit, better noise isolation, and improved bass reproduction.
- 1 pair of pre-installed orange bore eartips: These are similar to the standard white eartips and offer the same performance.
- 1 pair of dual-layer eartips: These are more situational for this set, offering a deeper fit without affecting sound transmission.
When it comes to sources, this set behaves very predictably. I tested them with various devices and can say that they sound roughly the same, whether connected to a phone or a powerful DAC like the Qudelix 5K.
The Tiandirenhe TD15 are V-shaped IEMs with an emphasis on bass and a slight dip in the midrange. Overall, I found their tuning quite interesting and unique. Let’s dive in.
I really like the quantity and quality of the bass in these IEMs. There is a clear emphasis on low frequencies, slightly overpowering the other ranges, making them true basshead IEMs.
Sub-bass: Insightful and deep, achieved through a resonant rumble. The sub-bass is noticeable even during minor attacks, filling the mid-bass with fullness and depth, while giving the bass body a defined and controlled texture.
Mid-bass: Rumbling, weighty, full, and packed with energy, resembling a small subwoofer. This set creates a thick sound with plenty of bass, yet avoids sounding bloated or muddy due to frequency overload. The attack is swift and extended, with a smooth decay. The timbre of the bass guitar is punchy and energetic, the drum is deep and resonant, and MIDI controllers and drum pads in EDM perfectly enhance the genre’s atmosphere and sound.
These are definitely basshead IEMs, and I consider they are the best option in their price range.
Lower mids: Like the lows, this frequency range hasn't been overlooked. The presentation of instruments in the lower range is excellent. The guitar sounds energetic, the piano's lower notes are weighty and deep, and the tone of the saxophone and clarinet is dynamic, adding richness and vibrancy to jazz. Overall, the lower mids seamlessly extend the low frequencies, making the sound more weighty and dense.
Mids: This range is recessed but still has its merits. While the frequency response shows a slight dip in the midrange, it’s barely noticeable during playback. Instrumental timbre is pleasing: the guitar has a resonant sound with a slight emphasis on the lower region; piano keys are melodic; and the violin is slightly bright and textured.
As for vocals, they sound subdued and recessed. I enjoy focusing on vocal tone and nuances, but I didn’t get that satisfaction here. The vocals are decent for budget IEMs but feel incomplete. The voice lacks warmth: Sinatra’s baritone feels unconvincing, and Mercury’s voice gets lost in the mix. Female vocals, however, came across as more realistic and full-bodied.
High mids: I found the upper mids lacking in presence, feeling vague and smeared. The upper register of instruments lacks tonal fullness, and the vocals feel unconvincing, as if they’re "sitting on the surface."
On the background of emphasized lows, the treble are pushed to the background, losing detail and pleasant brightness. The upper register of instruments sounds grainy and incomplete. The violin's tone is thin, cymbals are sharp, and the vocal tonality feels lacking, though free of harsh sibilance.
Separating, sound stage
The soundstage here is spacious due to the abundant bass but remains tight. It feels like a large sphere where all the instruments and vocals are placed together. In terms of separation, there are no significant issues considering the price range. Sounds are well-separated, but in intense music, there’s a slight layering effect, as if the sounds lag slightly behind. Additionally, there are issues with pinpointing the direction of the vocals or instrument placement.
Tiandirenhe TD15 vs QKZ x HBB:
The only comparison I would like to make is with the QKZ x HBB — budget basshead IEMs.
Both models are made of resin, feature dynamic drivers, and focus on bass reproduction. QKZ x HBB are smaller and have a more streamlined shape, making them more comfortable to wear. They also offer better sound isolation.
In terms of sound, I found QKZ x HBB to be more spacious and detailed, with a greater quantity of bass, whereas the Tiandirenhe TD15 delivers higher-quality bass. Additionally, QKZ x HBB are more bass-focused and provide a fun, warm sound signature, while the Tiandirenhe TD15 excel in the mids and highs.
In conclusion, if you want overwhelming bass, QKZ x HBB are the better choice. But if you value a balanced sound with quality bass and well-defined other ranges, the Tiandirenhe TD15 are worth considering.
I would call Tiandirenhe TD15 a well-tuned basshead IEM. The developers have done a great job of delivering solid bass without ignoring the other ranges. I appreciate the bass quality, the mids are quite decent for this price range, and the highs are slightly recessed. These IEMs stand out from typical basshead models as they offer enjoyable mids and highs while maintaining a strong emphasis on the bass.
Although Tiandirenhe is a newcomer to the market, I believe they’ve managed to impress, and I would confidently call this model the best basshead IEM under $25.
