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Final Audio Design F4100


Final Audio Design F4100

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Final Audio Design F4100



  • Housing: Aluminum

  • Driver Unit: Balanced armature driver

  • S.P.L: 106dB

  • Impedance: 42ohms

  • Weight: 12g


Main unit, Carrying case, 2 types of earpieces, Ear hooks, Safe fit rings, Cotton swabs

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Ultra small lightweight design for the perfect fit and high quality sound insulation.
Supersealed fit close to the eardrum for high resolution and rich bass

Bringing the driver unit closer to the ear drum, achieves an even more realistic, vivid sound quality. In order to achieve this in the F4100, FAD have meticulously downsized the housing with a design consisting of the minimum possible elements. Miniaturized to have a diameter of 5.5 mm, the housing is finished with hard aluminium-magnesium alloy anodic film. This also contributes weight reduction. Final’s unique method of using full-range balanced armature drivers across all models recreates bass tones with a fullness you would never imagine from the housing size. The cable is high purity OFC with detachable MMCX connectors. The earphone comes with an ear hook to prevent microphonics from the cable. This is one of final’s proud model, realizing sound quality and ease of use in a higher dimension. It tends to have a slightly warmer sound quality than the F7200.

Housing design that minimizes the distance between the ear drum and the driver unit.

You can position the product to be at the back or at the entrance of the ear canal, and change the sound quality by choosing different earpieces.
You can also change the position of the earpiece. Enables the sound output to be at the very front face of the earpiece. This is also a way to adjust sound quality. With the sound output at the very front, you will be able to feel the sound being transmitted directly.

Full-range balanced armature driver unit

F4100 has an ultra small full-range balanced armature driver unit.

Aluminium machined high rigidity housing

F4100 uses aluminium-magnesium alloy housing and is finished in a chic black anodic film to make it harder.

Choose between 2 types tips

Includes silicone earpieces in 5 sizes and foam earpieces in 3 sizes. Achieve a perfect fit no matter how large or small your ear canal is. Sealing performance is closely related to how the bass feels, as well as soundproofing performance. This system enables you to significantly change the fullness of the bass or the soundproofing performance. The foam type in particular has soundproofing performance similar to noise cancellation earpieces.

MMCX Connector&Original high purity OFC cable

F4100 utilizes high-precision MMCX connectors from a famous Swiss manufacturer.
The cable is high purity OFC. The PVC tubing has been chosen for its flexibility and has been finished with a rope-like texture to reduce microphonics.

Ear hook

The F series comes with an ear hook to reduce microphonics. Conventional products of the same type are slightly bigger in order to accommodate a range of ear sizes. This not only makes them stand out visually, it will also take you considerable time to get used to how they fit. As a result of re-investigating what the key is in attaching the ear hook, it was discovered that making the ear hook smaller than normal, and doing away with metal or resin wires, meant the shape could fit more people’s ears.

Newly developed carry case

The carry case for the housing has also been newly developed.
The earphones themselves are gently secured between thin domed silicone and a lid. This case is designed such that the cable is wrapped around the perimeter of the case and the plug is stored in the base compartment separate from the earphones. Cases that fix the earphones neatly in the same position might look good, but your cable will break more easily if it is stored in the same position every time. Our system satisfies opposing demands simultaneously − it takes into account damage that might be caused to the earphones themselves while preventing your cables from breaking by making sure they are not always wound into the same position. The resulting size fits in the palm of your hand, is lightweight, and easy to carry around.

Safe fit ring

The earphone comes with a safe fit rings (for silicon earpieces, for foam earpieces) so you can use your earpiece safely.

*Using the earpieces without the safe fit rings may result in the earpieces changing position and the tips of the housings protruding from the earpieces, which may in turn injure the ear canals.

How to wear the earphones

Check the L (left) and R (right) designations on each bush to distinguish between the right and left ear pieces (there are also protrusions at the bottom of the L on the left bush and on the reverse side of the same bush, so that left and right are easily distinguishable even in the dark). Holding the connector, fit the ear pieces into the ears using a slight twisting motion.

It is usual that a person's ears differ from left to right in terms of audio canal length and shape. Usually, fitting earphones in the same position in both left and right ears results in a discrepancy in the distance between the ear piece and the eardrum; this changes sound quality, and effects a slight sense of discomfort. With the F series, by changing sound quality through the positioning of the ear pieces in the ears, it is possible to avert this sense of discomfort between right and left. While playing music, move each ear piece around individually to find the fit that reproduces the most favorable sound for you. This is the best position for the ear piece. At first, this may take time, but once you have set this position, your body will be quick to adjust and remember the audibility and the feel of the fit, and it will be easy to fit the ear phones into your ears following this. 

You can also change the size of the ear pieces that you use; fit S or SS size ear pieces deep into the audio canals; insert L or LL size ear pieces just inside the ears; change the type of ear piece from silicon to foam and compare the two. Find the size and type of ear piece that delivers the best sound for you.

Sound quality reviews

These earphones are well balanced and have the softest, warmest sound edge of the earphones in the F series. In contrast to the top-of-the-line F7200 model and its clear high frequency expression, this model has a slightly mellow softness, and reproduces female vocals warmly and vividly. We encourage you to try both models and compare the difference.