Fostex T50RP mk4

Fostex's popular T50RP series now featuring an optimised new 4th generation RP driver design

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Introducing the Fostex T50RPmk4 Semi-Open Planar Magnetic Headphones — a revolutionary advancement in auditory technology. Crafted as the successor to the iconic T50RP mk3, the mk4 is engineered to set new standards in sound quality and comfort, all at an accessible price point.

Design Excellence With Enhanced Comfort

The T50RPmk4 features an entirely redesigned earcup, taking cues from the beloved traditional T-Series aesthetics, and is housed within the robust frame of the T60RP series. This fusion not only enhances durability but also elevates the overall wearing experience.

The T50RPmk4's New, thicker ear pads feature a low-resilience, around-ear type that provides a comfortable fit, making them comfortable to use even when listening for long periods of time.

4th Generation RP Driver

At the core of the Mk4 lies the groundbreaking RP (Regular Phase) driver technology. Since being installed in Fostex's first headphone, the T50, released in 1974, the RP driver has been used in several models across Fostex's range of headphones, and has been recognized by musicians and engineers in music studios around the world as monitor headphones.

The new 4th Generation RP driver found in the T50RPmk4 features a new printed coil pattern shape in order to expand and equalize the vibration area of the flat diaphragm. Additionally, the number of magnets that sandwich the diaphragm has been increased substantially. Furthermore, the components of the magnetic circuit have been redesigned to optimize their magnetic flux distribution, suppressing unnecessary resonance and achieving even better transient response.

This 4th generation driver, developed by fully incorporating various technologies cultivated over the years, simultaneously achieves improved sensitivity, smooth frequency response, and superb transient characteristics. By accurately and delicately reproducing elements all across the frequency spectrum, the soundstage and localization have also been improved. The new driver is also more efficient, requiring less power from the headphone amplifier to achieve peak performance.

Experience sound that captivates with the Fostex T50RP Mk4 Semi-Open Planar Magnetic Headphones — where innovation meets affordability in every note.

  • New earcup design influenced by the traditional T-Series for a perfect blend of classic and contemporary.
  • Robust body construction derived from the T60RP Series, ensuring longevity and a sleek appearance.
  • Equipped with the new standard RP driver, offering the same size but enhanced Sound Pressure Level (SPL) for superior audio performance.
  • Features a semi-open design that provides a broad and immersive soundstage, ideal for both professional and casual listening environments.
  • Delivers a significant improvement in both sound pressure level and fitting, catering to the needs of audiophiles and sound professionals alike.
  • T50RPmk4 headphones
  • 1 x 2m 3.5mm cable
  • 1 x 3.5mm to 6.35mm adapter
  • Type: Semi-open
  • Driver: RP planar magnetic
  • Impedance: 28 ohm
  • Sensitivity: 97 dB/mW
  • Max Input: 3,000 mW
  • Freq. response: 10 – 40,000 Hz
  • Weight: Approx.330 g (excluding cable)
  • Cable: 2m 3.5 mm(4-pole) to 3.5 mm(3-pole) single ended cable (6.35mm adapter included)

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