Final Audio Design E4000 High Resolution In-Ear HeadphonesCategory: E4000 SeriesThe Final Audio E4000 delivers clear sound quality across all bandwidths and a sense of real, true-to life sound. Final Audio carried out the sound design of the E4000 based on the latest acoustic engineering and psychological research results.Advanced Sound CreationUsing the usual method of sound creation whereby certain high frequencies are emphasized, you're given vivid sound when you first listen, but other ranges become clouded and hard to hear. With E4000, no particular sound ranges have been emphasized. This, together with Final Audio's commitment to detailed sound expression, results in realistic sound that sounds as if it were being played right in front of you.Acoustic Chamber Is the Core of Low-Frequency TuningThere is an acoustic resistor inside the rear housing of the driver unit, and this controls the low mid-range frequency characteristics that determine the framework of the sound quality. At the end of this, there is a pipe bent into an L-shape (acoustic chamber) which is necessary for tuning. This achieves a balance between the volume of low frequencies and clarity.MMCX Connector and Original OFC CableThe MMCX connector was developed in-company. Taking touch noise into consideration, soft, flexible coated material has been employed. When using the ear hooks, it moves flexibly, making for a good fit.Unique Swing-Fitting Earpiece MechanismWith their swing fit mechanism, the earpieces can be swung left and right and tilted towards the audio canal for a perfect fit. This prevents changes in shape, owing to the aperture of the earpiece coming into contact with the audio canal. The sound is transmitted directly to the eardrum, delivering clear sound.6.4mmφ Dynamic Driver UnitThe precision involved in assembling the parts for the driver unit is of utmost importance. The small-aperture 6.4mm diameter dynamic driver unit boasts an extraordinarily high level of precision.Rigid Machined Aluminum HousingCompared to a plastic housing, this housing machined from aluminum with an alumite finish firmly supports the driver unit and suppresses unnecessary vibrations. Fitting for the mature listener, this is a design with a simple shape and a high-quality texture matched with what could be termed classic sound quality.Original Earpieces with Different Bush ColorsTwo types of silicon are employed for the sound conduit and for the earbud. The silicon used for the sound conduit is more rigid than that used for the earbud and, by having groove processing applied to it, combines strength with flexibility. Soft silicon has been employed for the earbud, making for a comfortable fit and a high level of sound insulation.One of the bushes is gray, while the other is red; it is easy to distinguish between left and right, even in places with subdued lighting, by pulling the earpiece back slightly to check the color. Since the bush colors of neighboring sizes are different (the gray bushes alternate between dark and light gray; the red bushes alternate between red and pink), it is also easy to distinguish between sizes.*Comes in 5 sizes - SS/S/M/L/LLEar Hooks Alleviate Cable Touch NoiseFinal Audio discovered a form smaller than existing ear hooks, that didn’t utilize metal or resin wires, and that fit the ears of more people. Their slim design will have you forgetting you’re wearing them. It’s also easy to tie the hooks with a figure 8 cable.Cable noise - the unpleasant noise that occurs when the cable touches the user’s body while walking - is dramatically reduced.Silicon Carry CaseWith this silicon carry case, the cables can be rolled up and stored easily. The earphones themselves are gently secured using thin dome-shaped silicon covers.