If you want wired in-ear headphones with interchangeable sound tuning for calls, choose Kefine Delci AE Hi-Fi; if you need a straightforward 3.5 mm IEM with a dynamic-driver sound profile, choose HiFiGo DUNU Titan X. For calls, neither sheet specifies an inline microphone, so I wouldn’t choose either on the assumption that a microphone is included.
Kefine Delci AE Hi-Fi vs HiFiGo DUNU Titan X at a Glance
• Kefine Delci AE Hi-Fi strength: Two interchangeable nozzles let you choose between a warmer, smoother presentation and more upper-treble detail. Trade-off: It is wired with a 4.4 mm plug, so check that your device or adapter supports that connection.
• HiFiGo DUNU Titan X strength: A 3.5 mm connector suits devices with a standard headphone jack, and the box includes six pairs of silicone tips. Trade-off: The listed package does not offer interchangeable tuning nozzles.
• Delci AE fit: Choose it if you want two sound options, a 5.3 g-per-side aluminum housing, and a 4.4 mm connection.
• Titan X fit: Choose it if you want a 3.5 mm wired IEM with a single dynamic driver and a stated 16-ohm impedance.
The Delci AE is for a listener who wants some control over the sound without changing earphones. Its threaded nozzle system includes a silver option for a warmer, smoother character and a gold option intended to bring out more upper-treble detail. That gives you a practical choice: a more relaxed sound for everyday listening, or a brighter presentation when you want finer details to stand forward.
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-10-19 · 6 min read · Independent comparison
Its 10 mm driver combines a DLC dome with a PU surround, and each CNC aluminum housing weighs a stated 5.3 g. The cable detaches through a 0.78 mm 2-pin connection, and this model is listed with a 4.4 mm jack. That connector is the key compatibility check: if your phone, laptop, or other source lacks a matching output, you will need a suitable adapter or another compatible source.
I’d consider the Delci AE if adjustable tuning matters more to you than plug-and-play compatibility with a standard 3.5 mm jack. Its light housings may also appeal if you prefer not to wear a heavier metal earpiece. Skip it if you specifically need a built-in microphone for calls or want a 3.5 mm connector without adapting your setup; neither is established by the listed details.
The Titan X keeps the setup straightforward: a 10 mm dynamic driver, a detachable cable, and a listed 3.5 mm plug. Its dual-magnetic, dual-cavity driver is described as giving bass some weight while keeping mids clear. The stated tuning has slightly emphasized sub-bass, forward mids, and extended treble. That profile is presented as a fit for pop, EDM, and gaming, though the sound preference itself will still be personal.
The metal housing and included six pairs of silicone tips give you options for fit, with the tip set divided between vocal clarity and extra bass. The cable uses a 0.78 mm 2-pin connection, so it can be detached. The listed impedance is 16 ohms and sensitivity is 123 dB; those figures point to an earphone designed for direct use with common sources, though device output and listening preference still matter.
Choose the Titan X if a 3.5 mm connection is what your devices use and you want a single tuning rather than nozzle changes. It may suit someone looking for wired listening across music and gaming without adding a Bluetooth or battery setup. Skip it if a built-in call microphone is essential, or if you specifically want a 4.4 mm connection and alternate nozzle tuning.
Side-by-Side: Which Should You Choose?
• Want two sound signatures in one pair → Kefine Delci AE Hi-Fi. Its interchangeable silver and gold nozzles provide the clearest customization difference between these models.
• Need a listed 3.5 mm plug → HiFiGo DUNU Titan X. The Delci AE is specified with a 4.4 mm jack instead.
• Prefer the supplied fit options → HiFiGo DUNU Titan X. It includes six pairs of silicone tips, with options described for vocal clarity and added bass.
• Want a light stated housing weight → Kefine Delci AE Hi-Fi. The listed weight is 5.3 g per side.
• Want a lower stated impedance and high sensitivity → HiFiGo DUNU Titan X. Its listed figures are 16 ohms and 123 dB sensitivity; the Delci AE is listed at 28 ohms.
• Shopping specifically for a call headset → Neither is a clear match from the listed details. Neither sheet specifies an included microphone, so verify the cable or accessory configuration rather than assuming it will handle calls.
• Want a detachable 0.78 mm 2-pin cable → Either. Both models specify this connection, though their included plugs differ.
A search for the best open ear headphones for calls points toward a different kind of product than either of these: both are in-ear wired monitors, not open-ear headphones. Likewise, if you are comparing rotatable ear cups on ear headphones for calls, that describes an on-ear design feature not listed for either IEM. These two are better compared as wired in-ear options, with connector compatibility and microphone needs checked first.
I’d choose the Kefine Delci AE Hi-Fi if I wanted the more adjustable listening experience: two nozzle tunings, light stated housings, and a detachable cable. But for calls, I would not call it the best Bluetooth headset for calls—or a confirmed call headset at all—because the listed details do not establish an included microphone, and it is wired. My final recommendation is the Delci AE for someone prioritizing tuning choices and a compatible 4.4 mm setup, not for someone whose main requirement is dependable hands-free calling.
FAQ
Neither product’s listed details confirm a built-in microphone. The Delci AE’s product information mentions possible use with aftermarket microphone cables, but that does not establish that one is included. Check the exact cable configuration if calls are the deciding factor.
It is listed with a 3.5 mm jack, so it is the more direct fit for devices that have that output. The Delci AE is listed with a 4.4 mm jack, so it may require a compatible output or adapter.
Yes. It includes interchangeable silver and gold nozzles, described as offering different sound presentations. The Titan X is described with one tuning profile and does not list interchangeable nozzles.
No. Both are listed as wired earphones. The Delci AE has a detachable cable and a 4.4 mm plug; the Titan X has a detachable cable and a 3.5 mm plug.
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