Final Audio FI-BA-SST Balanced Armature IEM

  • Employs a silver-coated OFC cable. Delivers subtle, soft lingering sound field representation.

    The FI-BA-SST achieves rich, three-dimensional spatially expressed sound reproduction deemed difficult with a balanced armature driver. It employs a single driver, network-less direct connection circuit. Using an extremely complex assembly process possible because it is carried out at Final's own factory in Japan, this flagship model unlocks the utmost potential of the single balanced armature driver. Silver coated cables are employed, making for beautifully lingering soft high frequencies while retaining the delicacy of BA-SS, giving a polished sound with natural power of expression.

    Two models have been prepared, one with a 3.5mm plug and one with a 2.5mm plug (3.5mm: FI-BA-SST35, 2.5mm: FI-BA-SST25).

    BAM mechanism produces bass sounds and stereo spatial interpretations

    Original balanced armature driver unit

    Since the BAM mechanism optimizes the flow of air within the housing, according to our own unique specifications, an opening has been established on the back of the driver unit, which is usually closed.

    Highly rigid machined stainless steel housing

    There are five pieces per side to the housing, which has been machined from stainless steel. In the pursuit of the ideal BAM mechanism, special care has been taken even with the parts of the housing you can't see, every part of which has been created using extremely complex manufacturing processes.

    Usually the cable Final employed a collet chuck to secure the cable, so that the air flow through the inside of the housing is not compromised. The high-precision processes used even in such hidden aspects of the product support FI-BA-SS's outstanding sound quality.

    Original clear earpieces: five sizes to choose from

    The new style E type CLEAR earpieces employ two types of silicon differing in rigidity for the sound conduit and for the section that comes into contact with the user's ear. For the sound conduit, a more rigid silicon has been used compared to that used with the section coming into contact with the user's ear with a view to achieving both strength and flexibility. The earpiece is fitted into the ear while maintaining its round shape.

    Soft silicon has been employed for the section that comes into contact with the user's ear, making for a comfortable fit and a high level of sound insulation. Compared to the black, the surface smoothness and solidity differ slightly; with slight changes to the airtight nature of the product, bass tones are slightly softer, while high-pitched tones can be heard clearly, making for a tendency to clear sound. The product comes in a set of five sizes, SS/S/M/L/LL. C type BLACK (S/M/L) with its differing airtight nature and bass tone reproduction is included along with the E type clear.

    Original high purity OFC silver coated cable

    Final Audio has used high-purity OFC silver coated cables that provide a wide sound stage. These jointly-developed cables were originally designed by and are currently manufactured by the well-renowned Junkosha corporation for the purpose of being used with the supercomputer "Kei" due to their fast signal transmission speed. The insulator film is made from PFA which was also developed by Junkosha who used their extensive know-how through the JUNFLON brand to create the ultimate in low-permittivity material.

    The outer tube is made from PVC for maximum flexibility. The user will experience surprising flexibility that both makes the cable extremely easy to use as well as reducing the likelihood of microphonics. In addition, the mini-plug have a tendency to disconnect so we've far exceeded the regular QA pass criteria of a 5,000-time bend test by changing the connection design to one that can withstand more than 50,000 bends.

    BAM vent that allows for both the control of airflow and to prevent sound leakage

    A BAM vent has been established on the back of the housing to allow for both the control of airflow and to prevent sound leakage.

    With balanced armature driver units, iron is driven to produce sound, and as such, these drivers face a number of problems, amongst which are "proving tiring to listen to", "having sound that is subtle and beautiful, but lacking in depth and being flat" and "lacking bass interval". At final, they have decided to focus on developing technology for the reproduction of bass tones and three-dimensional space with the full-range reproduction of a theoretically unproblematic single driver unit, rather than taking things in a multiway direction.

    They went back to the beginning and reviewed the performance of the balanced armature driver, focusing their attention on something they had previously overlooked: airflow inside the housing. Final developed BAM (Balancing Air Movement), a mechanism that optimizes airflow inside the housing through the creation of an aperture in the driver unit, which is usually sealed.

    While achieving bass tones and deep, three-dimensional spatial representation, which proved difficult with single driver full-range reproduction, they achieved a BA type that at the same time made for natural listening the user doesn't tire of.

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