The TANCHJIM ZERO ULTIMA is a wired HiFi earphone built on a 10 mm dual-cavity DMT 4 Ultra dynamic driver, with 2.3 g earpieces and an in-line mic on a fixed 3.5 mm cable. It's a light, call-ready everyday IEM for commuters and office listeners plugging into a headphone jack, dongle or DAP.
Who the TANCHJIM ZERO ULTIMA is for
Commuters and office calls: An in-line omnidirectional mic sits on the cable, so the same set handles music on the train and calls at your desk.
Small ears and all-day wear: Each earpiece weighs just 2.3 g on a 10.5 mm mini body, a light fit for smaller ears and long listening sessions.
Dongle and DAP users: The 3.5 mm plug keeps your source flexible: a phone with a headphone jack, a USB-C dongle DAC or a portable player.
Switch and PC gaming: TANCHJIM lists Switch and PC compatibility; desktops with separate headphone and mic jacks need a 3.5 mm splitter for the mic.
Skip it if: your phone has no headphone jack and you don't own a USB-C dongle, since this listing is the 3.5 mm-plug version only.
TANCHJIM ZERO ULTIMA key specs
Driver: 10 mm dual-cavity dynamic (DMT 4 Ultra)
Diaphragm: Ti-plated dome composite with PU suspension
Impedance: 30 Ω ±10%
Sensitivity: 123 dB/Vrms
Frequency response: 10 Hz–48 kHz
THD: 0.05% @ 1 kHz, 94 dB
Weight: 2.3 g per earpiece
Cable: Fixed, 8-strand silver-plated OFC Litz, 3.5 mm plug
Microphone: In-line, omnidirectional
Genuine TANCHJIM stock, free shipping on every order.
TANCHJIM ZERO ULTIMA vs similar options
vs CVJ TXS: Also has an in-line mic, but on a detachable 2-pin cable you can replace; the ZERO ULTIMA's cable is fixed, so pick the CVJ if you want to swap cables later.
vs KZ ZVX: No microphone, but a detachable 0.75 mm 2-pin cable; pick the ZERO ULTIMA if you need an in-line mic for calls.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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