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Used / open-box FiiO FF5 Flat-Head Earbuds reference image
  • Used / open-box FiiO FF5 Flat-Head Earbuds reference image
Used / Open-Box FiiO FF5 Flat-Head Earbuds

Used / Open-Box FiiO FF5 Flat-Head Earbuds

Reference price $99.00

Reference price is for price anchoring only. Final quote depends on condition, accessories, version, stock, and destination.

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  • Unit details confirmed before offer
  • Lab-inspected before dispatch
  • DOA support and repair path available

Product overview

The FiiO FF5 is a Flat-Head Earbuds for building or refining a HiFi listening setup. HiFiLoop uses this page as a focused model page for used / open-box private-quote requests.

Key features

  • Flat-head earbuds built around a large 14.2mm dynamic driver with a carbon-based diaphragm.
  • Diffuse open design and extended bass acoustic resistance pipes support the FF5's earbud tuning approach.
  • Expanded MMCX detachable cable design supports cable replacement and source flexibility.
  • Included 3.5mm and 4.4mm terminations support single-ended and balanced portable sources.
  • CNC aluminum-alloy shells and multiple foam and anti-slip ring accessories support fit tuning.

Key specifications

Product type Flat-head earbuds
Driver Single 14.2mm dynamic driver with carbon-based diaphragm
Frequency response 20Hz-20kHz
Impedance 45 ohms at 1kHz
Sensitivity 106dB/mW at 1kHz
Cable 4 strands totaling 392 wires of silver-plated monocrystalline copper
Connector / plugs Expanded MMCX; 3.5mm single-ended and 4.4mm balanced plugs
Weight About 3.4 g per side, excluding cable

A-Class confirmation guide

What is reviewed before a reference page moves forward.

These notes explain how lab checks, condition records, shipping boundaries, and sourcing requests are handled before manual confirmation.

01 / Lab check

Pre-Listing Lab Check

Function and condition are checked before confirmation.

02 / Condition and kit

Condition & Kit Recorded Separately

Condition is not a shortcut for every detail.

03 / Request details

Details to Share

Send the details needed for review.

04 / Sourcing path

Manual Confirmation & Sourcing Path

Start the request before confirmation.

What this listing means

This is a used / open-box reference page for this model. The exact unit, included kit, timing, and support terms are confirmed before payment.

Before you make an offer

  • Check the exact unit photos and condition notes
  • Confirm included accessories and version details
  • Use the final quote as the decision point

Inspection & condition

Function, cosmetics, accessories, and known limitations are reviewed for the exact unit before dispatch.

Shipping & support

Processing is normally 3-5 business days after confirmation. International delivery is commonly 7-15 days; DOA and repair support are confirmed by destination.

What does Reference price mean?

It is a price anchor for comparison. It is not the final quote.

Is this exact unit ready to ship?

Not from this page alone. HiFiLoop confirms the exact unit and timing before payment.

Can HiFiLoop help me find another unit?

Yes. Share the target model, preferred condition, budget range, and destination so HiFiLoop can look for a suitable unit.

Need confirmation

Confirm the exact unit before the final decision.

Send an offer, sourcing request, or availability check when you want exact-unit photos, accessories, condition notes, and quote details.

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