Industry & Ideas
Starting an IEM Brand in China Is Easy. Selling It Is the Hard Part.
Starting an IEM brand in China can be easy. Finding buyers is harder. Why marketing, audience trust and sales channels matter most for…
XCHIFI JOURNAL
IEM News & InsightsStay curious. Listen deeper.
New technology. Better listening. The ideas and people shaping your next earphone.
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The next technology
MEMS IEMs: What Changes When You Can Use Your Own DAC?
Why some MEMS IEMs need dedicated drive electronics, what direct-drive designs change, and what TINHIFI learned from an earlier USB-C prototype.
Design & Manufacturing
CHU 2 vs CHU 3: Metal Shells, Comfort and Paint Peeling
CHU 2 vs CHU 3: explore zinc-alloy shells, comfort and paint peeling, plus how IEM housings are cast, coated and priced. Read the…
THE ESSENTIALS
A better place to start.
Understand the drivers
Planar vs Dynamic IEMs: Which Should You Choose?
Planar or dynamic-driver IEMs? Compare tuning, bass, fit and source requirements without treating the driver type as a sound-quality ranking.
Listen & compare
Lossless Audio for IEMs: Will You Hear a Difference?
Is lossless audio worth it for IEMs? Understand file quality, DAC compatibility and a fair listening comparison before paying for a new setup.
Care for your IEMs
Do Replacement IEM Filters Change the Sound?
Replacing an IEM nozzle filter can change its tuning. Learn why diameter alone is not enough and how to choose the correct replacement…
THE JOURNAL
All stories. More possibilities.
IEM Guides
Can EQ Make Cheap IEMs Sound Like Expensive Ones?
Can EQ make budget IEMs sound like expensive earphones? Learn why matching frequency-response curves can bring them closer without guaranteeing identical sound.
IEM Guides
Does EQ Improve Headphone Sound? Benefits and Limits
Can EQ improve Chi-Fi IEMs and other headphones? Learn what it changes, its limits, phase shift, distortion and how to leave enough headroom.
IEM Buying Guides
Custom vs Universal IEMs: What Are You Paying For?
Compare custom and universal IEMs by fit process, adjustment, ownership and service. Find out what custom construction adds beyond the driver list.
IEM Buying Guides
Can Wired Earbuds Be Waterproof? What to Check
Before buying waterproof wired earbuds, check the model's stated water resistance, exposed connections, intended use and care instructions.
IEM Buying Guides
Why Do Some Earbuds Stick Out So Far?
Learn why earbuds protrude, how nozzle angle and internal packaging affect their position, and what to check before forcing an IEM deeper into…
Build an IEM
金属 vs 塑料耳机外壳：谁更耐用？
Metal or plastic earbuds? Compare seams, sockets, weight and repairability before assuming a heavier earphone will survive daily use better.
IEM Buying Guides
Can You Sleep with IEMs? What Side Sleepers Should Check
Considering IEMs for sleep? Understand shell pressure, listening time and cable routing, and why a low-profile fit is not a guarantee of overnight…
Build an IEM
How Are IEMs Tested Before They Leave the Factory?
Learn what an IEM quality-control plan can check, from frequency response and channel matching to assembly, and what a test report should explain.
IEM Guides
Do IEMs Leak Sound? What People Around You Can Hear
Find out what affects IEM sound leakage, why isolation is a different question, and how to check whether your listening disturbs someone nearby.
IEM Drivers & Acoustics
What Do the Tiny Holes on Your Earbuds Do?
Tiny earbud holes may be vents, microphone openings or acoustic ports. Learn why their function matters and why you should not block or…
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