• FiiO FD3 IEMs in black with 3.5mm copper MMCX cable
  • FiiO FD3 black earpieces with glass-covered faceplates
  • FiiO FD3 12mm DLC diaphragm dynamic driver
  • FiiO FD3 semi-open design cutaway
  • FiiO FD3 front acoustic prism detail
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FiiO

FiiO FD3 IEMs — 12mm DLC Dynamic Driver, Swappable Sound Tubes, MMCX

FiiO FD3 IEMs — 12mm DLC Dynamic Driver, Swappable Sound Tubes, MMCX
  • Genuine & Brand-New
  • Free Shipping · Ships from China
  • 1-Year Warranty
  • 45-Day Returns
$115.99 USD
$115.99 USD
Shipping calculated at checkout.

The FiiO FD3 is a wired in-ear monitor with a single 12mm dynamic driver using a diamond-like carbon (DLC) diaphragm, a semi-open aluminum-magnesium shell with two swappable sound tubes, and a detachable MMCX cable with a 3.5mm plug. It suits listeners who want one dynamic driver they can fine-tune with tubes and three styles of ear tips, especially for pop.

Who the FiiO FD3 is for

  • Tuning by ear: Two sound tubes come with it: FiiO says the black, wide-bore tube brings out treble detail and the red, narrow-bore tube gives fuller bass.
  • Pop listeners: FiiO describes the FD3's tuning as lively and well suited to pop, with good high-frequency resolution.
  • Long sessions: The semi-open design balances air pressure inside the shell, which FiiO says puts less pressure on the eardrums.
  • Fit experiments: Balanced, bass and vocal silicone tips (3 pairs each) plus 2 pairs of foam tips ship in the box, along with a storage case.
  • Skip it if: you want a 2.5mm or 4.4mm balanced plug out of the box: the FD3 comes with a 3.5mm cable only, while the FD3 Pro adds swappable plugs.

FiiO FD3 key specs

  • Driver: 12mm dynamic driver, DLC (diamond-like carbon) diaphragm, 1.5T magnetic flux
  • Frequency response: 10Hz–40kHz
  • Impedance: 32Ω @1kHz
  • Sensitivity: 111dB/mW @1kHz
  • Cable: Detachable expanded MMCX, 4-strand 120-wire monocrystalline copper, about 1.2m
  • Plug: 3.5mm L-shaped, gold-plated
  • Shell: Semi-open aluminum-magnesium alloy, glass-covered faceplate, black
  • Weight: About 7g per earpiece (without cable)
  • Tuning parts: 2 swappable sound tubes (red pre-installed, black included)
  • Certification: Hi-Res Audio

Genuine FiiO stock. Free shipping on every order, 45-day returns.

FiiO FD3 vs similar options

  • vs FiiO FD3 Pro: FiiO's Pro variant of the FD line, also a single dynamic driver on a detachable MMCX cable in black with Hi-Res certification; pick the FD3 if a 3.5mm copper cable is all you need, at a lower price.
  • vs FiiO FD15: Uses a magnalium DLC diaphragm with MMCX connectors in silver or black; pick the FD3 for a 12mm DLC dynamic driver and MMCX cable at a lower price.

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Specifications

Driver 12mm dynamic driver, DLC diaphragm
Impedance 32Ω @1kHz
Sensitivity 111dB/mW @1kHz
Frequency response 10Hz–40kHz
Connector MMCX (detachable), 3.5mm plug
Weight About 7g per earpiece (without cable)

What's in the box

  • FD3 earphones (black)
  • MMCX cable with 3.5mm plug
  • Balanced silicone ear tips, 3 pairs (S/M/L)
  • Bass silicone ear tips, 3 pairs (S/M/L)
  • Vocal silicone ear tips, 3 pairs (S/M/L)
  • Foam ear tips, 2 pairs
  • Spare sound tubes, 1 pair
  • Storage case
  • MMCX assist tool
  • Cleaning brush
Good to know

Buying from TonePier

Is this unit genuine?

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.