DLC Diaphragm Dynamic Driver

The latest FD3 series of IEMs boasts a large 12mm dynamic driver unit with full-DLC diaphragm material. DLC (Diamond-Like Carbon) is a highly rigid material that also has an extremely lightweight structure that reduces unnecessary vibrations and makes the driver more responsive and clean sounding. It uses strong magnets that produce a strong magnetic flux of up to 1.5T. This helps in a deep-diving lower end and a highly detailed, ultra-low distortion in the high-end frequencies.

Featured Acoustic Prism In The Front Cavity

FiiO FD3 Pro features an acoustic prism in the front cavity. It is fitted close to the front end of the cavity. This helps in precisely controlling the sound waves travel inside the cavity, reducing high-frequency response, and provides an overall sound wave diffusion. It also helps in reducing the distortion in the output and enables the pair to produce a clean output.

Better Sound With Semi-open Design

FiiO FD3 Pro features an acoustic prism in the front cavity. It is fitted close to the front end of the cavity. This helps in precisely controlling the sound waves travel inside the cavity, reducing high-frequency response, and provides an overall sound wave diffusion. It also helps in reducing the distortion in the output and enables the pair to produce a clean output.

Better Sound With Semi-open Design

The semi-open design of the FD3 Pro on FiiO's patented technology for balanced air pressure within brings several advantages. Not only does such a design lead to more natural sound. but it also effectively protects your hearing by balancing air pressure within the FD3 Pro leading to less pressure on your eardrums. This makes your listening experience less tiring and the sound less forced.

Premium Aluminium-Magnesium Alloy Build

The FD3 Pro has a simple, yet beautiful appearance based on the theme of curves. The unique celluloid panel is covered with Z5D film coating glass for a pure yet fresh transparent look And the aluminium- magnesium alloy of the body makes the FD3 Pro exceptionally light, making it easier and more pleasurable to carry around. The aluminium-magnesium alloy main body is made man industrial process combining five-axis CNC processing and hand polishing.

Swappable Tunning Nozzles

FiiO implemented the replaceable tuning nozzle in the flagship FD5 that is being followed here by the FD3 Pro. It comes with two sets of tuning nozzles, one with a thin diameter of the mouth (red) and the other with a wide diameter mouth (black). The thin diameter nozzle benefits the lower end (more robust base) while the wide diameter nozzle benefits the high frequencies (more detailed treble) with the FD3 series.

Difference Between FD3 & FD3 Pro

While both the FD3 and FD3 Pro have the same cavity design and structure, the only difference between the two is the included cable. FD3 comes bundled with a 4-strand 120-core high-purity single-crystal copper cable with a fixed 3.5mm termination plug.

FiiO FD3 Pro comes with a heavier, 8-strand 152-core Litz structure silver-plated monocrystalline copper cable with interchangeable termination plugs, with 3.5mm standard and 2.5mm, 4.4mm balanced plugs included in the package.

FiiO FD3/FD3 Pro In Ear Monitors

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£119.99
£119.99
Version: FD3 Pro Black

DLC Diaphragm Dynamic Driver

The latest FD3 series of IEMs boasts a large 12mm dynamic driver unit with full-DLC diaphragm material. DLC (Diamond-Like Carbon) is a highly rigid material that also has an extremely lightweight structure that reduces unnecessary vibrations and makes the driver more responsive and clean sounding. It uses strong magnets that produce a strong magnetic flux of up to 1.5T. This helps in a deep-diving lower end and a highly detailed, ultra-low distortion in the high-end frequencies.

Featured Acoustic Prism In The Front Cavity

FiiO FD3 Pro features an acoustic prism in the front cavity. It is fitted close to the front end of the cavity. This helps in precisely controlling the sound waves travel inside the cavity, reducing high-frequency response, and provides an overall sound wave diffusion. It also helps in reducing the distortion in the output and enables the pair to produce a clean output.

Better Sound With Semi-open Design

FiiO FD3 Pro features an acoustic prism in the front cavity. It is fitted close to the front end of the cavity. This helps in precisely controlling the sound waves travel inside the cavity, reducing high-frequency response, and provides an overall sound wave diffusion. It also helps in reducing the distortion in the output and enables the pair to produce a clean output.

Better Sound With Semi-open Design

The semi-open design of the FD3 Pro on FiiO's patented technology for balanced air pressure within brings several advantages. Not only does such a design lead to more natural sound. but it also effectively protects your hearing by balancing air pressure within the FD3 Pro leading to less pressure on your eardrums. This makes your listening experience less tiring and the sound less forced.

Premium Aluminium-Magnesium Alloy Build

The FD3 Pro has a simple, yet beautiful appearance based on the theme of curves. The unique celluloid panel is covered with Z5D film coating glass for a pure yet fresh transparent look And the aluminium- magnesium alloy of the body makes the FD3 Pro exceptionally light, making it easier and more pleasurable to carry around. The aluminium-magnesium alloy main body is made man industrial process combining five-axis CNC processing and hand polishing.

Swappable Tunning Nozzles

FiiO implemented the replaceable tuning nozzle in the flagship FD5 that is being followed here by the FD3 Pro. It comes with two sets of tuning nozzles, one with a thin diameter of the mouth (red) and the other with a wide diameter mouth (black). The thin diameter nozzle benefits the lower end (more robust base) while the wide diameter nozzle benefits the high frequencies (more detailed treble) with the FD3 series.

Difference Between FD3 & FD3 Pro

While both the FD3 and FD3 Pro have the same cavity design and structure, the only difference between the two is the included cable. FD3 comes bundled with a 4-strand 120-core high-purity single-crystal copper cable with a fixed 3.5mm termination plug.

FiiO FD3 Pro comes with a heavier, 8-strand 152-core Litz structure silver-plated monocrystalline copper cable with interchangeable termination plugs, with 3.5mm standard and 2.5mm, 4.4mm balanced plugs included in the package.

Drivers

Powerful 12mm Dynamic Driver With DLC Diamond Diaphragm

Diaphram

Strong 1.5T Magnetic Flux

 

6-Series Aluminium-Magnesium Alloy Cavities

Tuning

FiiO’s Patented Air Pressure Relief Technology With Semi-Open Rear Cavity Design

Plugs

Interchangeable Ear Nozzle

Connection

Standard MMCX Connectors

Frequency response: 10Hz-40kHz
Impedance: 32Ω@1kHz
Sensitivity: 111dB@1mW
Max input power: 100mW
Cable

FD3 Pro comes with a 8-strand 152-core silver-plated monocrystalline copper cable with interchangeable termination plugs, 3.5mm standard and 2.5mm/4.4mm balanced, included in the package.

  • FD3/FD3 Pro
  • Balanced eartips (S/M/L)
  • Bass eartips (S/M/L)
  • Vocal eartips (S/M/L)
  • 2 pairs of foam eartips
  • Cleaning brush
  • Carry case
  • MMCX assist tool
  • 1 pair of interchangeable sound tube
  • FD3 version: 120-core high-purity copper cable with a fixed 3.5mm termination plug.
  • FD3 Pro: 152-core silver-plated monocrystalline copper cable with interchangeable termination plugs; 3.5mm standard and 2.5mm/4.4mm balanced included in the package.

Item Ships from our UK Warehouse - Typical delivery is 3 - 5 business days for mainland UK.

OTIC can be contacted for updates.

UK ORDERS - Free shipping on all baskets over £250.

We offer a refund on any unused items, subject to our returns policy.

Click here to view all delivery & returns info - including shipping, tax and duty information for International Customers.

Products purchased from OTIC Audio are supplied with a manufacturer warranty that is specified on the product page on our website. Most products come with a 1Y manufacturer warranty (or 3 months for B-grade, open box, refurbished, ex-demo, and second-hand items).

The manufacturer's warranties are limited to physical defects in the materials, parts, and workmanship used in making the product. Abnormal conditions, deliberate abuse, and damage due to accidents, operator's error, or unauthorized service attempts are excluded from any warranty claims.

Faulty goods returned under the manufacturer's warranty are to be returned to OTIC Audio at the cost of the customer. OTIC Audio will cover the cost of shipping the repaired or replacement product back to the customer.

FiiO FD3/FD3 Pro In Ear Monitors

FiiO FD3/FD3 Pro In Ear Monitors

£119.99

FiiO FD3/FD3 Pro In Ear Monitors

£119.99
Version: FD3 Pro Black

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