TANCHJIM Fission Dynamic Driver IEM Earphone
Best customizable in-ear monitor for audiophiles seeking precise sound control.
The TANCHJIM FISSION is a versatile in-ear monitor designed for audio enthusiasts, featuring proprietary Fifth-Generation DMT dynamic driver technology. It offers 12 unique tuning styles through interchangeable nozzles (brass, titanium, stainless steel) and a 4-step filter knob, allowing for a highly customizable listening experience. Engineered with advanced FEA acoustic principles, it delivers ultra-low distortion and an expansive frequency response. The lightweight aluminum alloy body with sapphire glass accent ensures comfort for all-day wear, making it ideal for music, gaming, or critical listening.
$149.99
Owner Satisfaction
4.6
/ 5
Category Rank
454
/ 6142
#454 in Headphones
Price vs Category Average
-74%
Below average
Driver
5
/ Proprietary TANCHJIM DMT dual-magnetic dual-chamber dynamic
Who it's for
- Commuters and listeners needing comfort for long sessions
- Audiophiles who prefer balanced, natural sound reproduction
- Users wanting durable gear that feels premium
Who should skip it
- Listeners sensitive to weight in their ears
- Bassheads looking for powerful, punchy low-end impact
- Casual listeners relying solely on standard smartphone outputs
Performance breakdown
Tuning Versatility
Twelve distinct sound profiles offer unmatched flexibility for every listening preference.
Acoustic Precision
Fifth-generation driver technology delivers exceptionally clean and distortion-free audio reproduction.
Build Quality
Aluminum alloy and sapphire glass create a premium, highly durable aesthetic.
Ergonomic Comfort
Extensive ear mold data ensures a secure fit for extended sessions.
Connectivity Options
Interchangeable plugs provide seamless compatibility across all modern audio devices.
Frequency Extension
Broad range captures subtle details from deep bass to shimmering highs.
Key Specs
Driver
Proprietary TANCHJIM DMT5 dual-magnetic dual-chamber dynamic
Frequency Response
8Hz – 48,000Hz
Sensitivity
126dB
Impedance
16Ω
Total Harmonic Distortion (THD)
<0.056% @ 1kHz
Material
Lightweight aluminum alloy body with sapphire glass accent
Cable
Premium 2-pin high-purity silver-plated copper cable with silver foil shielding
Features
- 12 unique tuning styles via interchangeable nozzles and filter knob
- Proprietary Fifth-Generation DMT dynamic driver technology
- Advanced FEA acoustic engineering for ultra-low distortion
- Ergonomic design based on extensive ear mold data for comfort
- APP customization for personalized sound (Type-C version)
- Durable aluminum alloy construction with sapphire glass accent
- Water-resistant acoustic filter mesh
- Includes three interchangeable plugs (3.5mm, 4.4mm & Type-C)
What customers say
Customers consistently praise the TANCHJIM Fission for its exceptional build quality, noting the solid metal construction feels premium and durable. The sound signature is frequently described as natural and well balanced, offering technical performance that significantly exceeds its modest price tag. Reviewers highlight the Fission as a standout value proposition in the competitive dynamic driver market, making it a highly recommended choice for those seeking quality without breaking the bank.
Know before you buy
The combination of three nozzle materials—brass, titanium, and stainless steel—and the 4-step filter knob provides 12 distinct tuning profiles. This allows you to physically adjust the frequency response to better suit your personal preference, whether you prefer a warmer sound or more analytical clarity.
Yes, the Fission includes three interchangeable plugs—3.5mm, 4.4mm, and Type-C—making it compatible with standard headphone jacks, balanced audio players, and modern smartphones or laptops.
The Type-C version includes an integrated DAC that supports app-based customization for your sound profile. This allows for digital signal processing and personalized EQ settings that aren't available on the standard analog cable versions.
The housing is crafted from a lightweight aluminum alloy and shaped based on extensive ear mold data to ensure a secure, ergonomic fit. The design is intended to minimize ear fatigue, making them suitable for extended use during gaming or critical listening.
This proprietary dual-magnetic, dual-chamber driver is engineered to reduce distortion to ultra-low levels, specifically below 0.056% at 1kHz. This results in a cleaner, more accurate sound reproduction across a very wide frequency range of 8Hz to 48,000Hz.
The construction features a robust aluminum alloy body accented with scratch-resistant sapphire glass. Additionally, the acoustic filter mesh is water-resistant, protecting the internal components from moisture and debris during daily wear.
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$150