Fostex is a premier Japanese audio manufacturer specializing in professional headphones, recording equipment, and high-fidelity speaker components.
フォステクス株式会社 is a distinguished electronics company headquartered in Tokyo, Japan, renowned for its contributions to the professional and audiophile audio markets. Founded as a division of Foster Electric Co., Ltd., Fostex has spent decades refining audio transducer technology. The brand is particularly famous for its proprietary Regular Phase (RP) planar magnetic driver technology, which powers its acclaimed line of studio headphones and microphones.
Beyond headphones, Fostex manufactures a wide range of audio equipment, including active monitor speakers, portable field recorders, and digital-to-analog converters (DACs). Their products are designed to meet the rigorous demands of musicians, sound engineers, and high-fidelity enthusiasts. With a commitment to acoustic excellence, Fostex continues to innovate in driver design and audio processing.
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Owner's manuals and legacy documentation can be found on the Support page of the official Fostex website under the respective product categories or discontinued products section.
Ear pads are consumable items. To replace them, gently pull the old pad off the housing rim. If a damper ring is present, ensure it is placed correctly before stretching the new pad's lip into the groove of the headphone cup.
Yes, many modern Fostex models (like the T60RP and mk3/mk4 series) feature detachable cables and support balanced connections using optional cables (e.g., 2.5mm or 4.4mm balanced plugs).
RP stands for Regular Phase. It is Fostex's proprietary planar magnetic driver technology, which uses a flat diaphragm and printed coil circuit to deliver accurate transient response and high sound localization.