Fostex T60RP

The Fostex T60RP is a semi-open headphone that stands out with its proprietary orthodynamic drivers and elegant African mahogany ear cups. Designed for audiophiles and demanding professionals, it delivers precise sound reproduction with an extended frequency response from 15 Hz to 35,000 Hz. Its RP (Regular Phase) diaphragm technology combined with neodymium magnets ensures exceptional dynamics and excellent transient response. The T60RP also features detachable connectivity compatible with various types of balanced connections, offering flexibility for both studio and home use.

Cutting-edge technology rooted in historical expertise

The T60RP belongs to the lineage of Fostex RP diaphragm headphones, a technology developed since the 1970s. This orthodynamic technology (also known as magnetostatic or planar magnetic) fundamentally differs from conventional dynamic drivers. The RP diaphragm consists of a heat-resistant polyimide film etched with a copper foil circuit. This diaphragm is placed between neodymium magnets creating a uniform magnetic field.

The magnetic circuit design has been improved in this model with the use of a new low-carbon yoke material. This technical innovation optimizes magnetic transmission efficiency and ensures a perfectly symmetrical distribution of magnetic flux density. The result is a remarkably linear diaphragm movement, guaranteeing faithful and detailed sound reproduction across the entire audible spectrum.

This technology gives the T60RP an impressive ability to handle fast transients, a crucial element for accurately reproducing instrument attacks and vocal subtleties. Additionally, its high tolerance to input power (up to 3000 mW) allows it to fully exploit its potential even with powerful amplifiers.

A refined design combining aesthetics and acoustics

One of the distinctive elements of the T60RP lies in its African mahogany ear cups. This material choice is not merely aesthetic; the wood plays a fundamental acoustic role by providing a natural warmth and characteristic sound depth. The mahogany enriches the headphone’s sound signature while preserving the analytical precision inherent to RP drivers.

The semi-open design represents a judicious compromise between the sound isolation of closed models and the sound openness of fully open designs. This architecture allows for an airy and natural soundstage while maintaining satisfying bass presence. The low-resilience circumaural ear pads comfortably envelop the ears, ensuring prolonged comfort even during long listening sessions.

The genuine leather headband harmoniously completes the ensemble, adding an extra touch of elegance while ensuring stable support on the head. Weighing approximately 380 grams (without the cable), the T60RP remains relatively lightweight for a headphone in this category, contributing to its user comfort.

Versatile connectivity for all uses

The T60RP stands out with its detachable connectivity, offering appreciable usage flexibility. The headphone comes with a standard 1.5-meter cable equipped with a 3.5 mm stereo jack connector, accompanied by a 6.3 mm adapter for compatibility with home and professional hi-fi equipment.

One of the major advantages of the T60RP is its compatibility with various types of balanced connections. Fostex offers several optional cables specifically designed for this model:

• The ET-RP2.5BL cable with a 2.5 mm balanced connector
• The ET-RP4.4BL cable with a 4.4 mm balanced connector (Pentaconn standard)
• The ET-RPXLR cable with a 4-pin XLR connector

This versatility allows the T60RP to fully exploit its potential with modern portable audio players (DAPs) and headphone amplifiers equipped with balanced outputs. Balanced transmission offers several advantages, including better channel separation, noise reduction, and increased dynamics.

The standard and optional cables are made of high-quality OFC (Oxygen-Free Copper), ensuring optimal signal transmission across the entire frequency range.

Sound signature and acoustic performance

The T60RP is characterized by a balanced sound signature favoring neutrality and precision. The mids are particularly well-rendered, with remarkable clarity and transparency on vocals and acoustic instruments. The highs are detailed without ever becoming harsh, while the bass, though less prominent than on some closed models, remains articulate and controlled.

The soundstage offered by the T60RP is spacious and well-structured, allowing for precise localization of instruments in the stereo field. This quality makes it a valuable tool for mixing and mastering, where spatial perception plays a crucial role.

Its extended frequency response (15 Hz - 35,000 Hz) enables it to faithfully reproduce the subtlest harmonics, contributing to a natural rendering of instrumental timbres. With a sensitivity of 92 dB/mW and an impedance of 50 ohms, the T60RP ideally requires a quality amplifier to express its full potential, although it remains usable with less powerful sources.

Comparison with other models in the RP range

The T60RP positions itself as the premium model in Fostex’s RP range, above the T50RPmk3, T40RPmk3, and T20RPmk3. Compared to the T50RPmk3, also semi-open, the T60RP mainly stands out with its mahogany ear cups (versus plastic cups) and improved comfort thanks to its low-resilience ear pads.

In terms of sound, the T60RP offers a more refined signature with better extension at the spectrum’s extremes and superior detail resolution. It also benefits from detachable connectivity, absent in the lower models of the range.

The T60RP shares the same core technology as the recent T50RPmk4 but with more luxurious finishes and slightly superior acoustic performance. It represents an interesting compromise between entry-level models and the brand’s high-end headphones like the TH909 or TH1100RP, which are much more expensive.

Professional and audiophile applications

Thanks to its technical and sonic qualities, the T60RP excels in various professional applications. In the studio, its precision and ability to reveal the smallest details make it a valuable tool for mixing and mastering. Its faithful transient reproduction allows for easy identification of technical issues such as clicks, pops, or subtle distortions.

In broadcasting and post-production, its vocal clarity and prolonged comfort are particularly appreciated. For sound engineers working in the field, its robustness and high tolerance to sound levels are considerable assets.

For audiophiles, the T60RP offers an analytical and detailed listening experience, particularly suited to acoustic, classical, and jazz music genres. Its ability to reveal recording nuances and interpretative subtleties will satisfy the most demanding listeners.

Technical Specifications

Transducer Technology

• RP Planar Magnetic Transducer
  • Equipped with Fostex’s proprietary RP diaphragm made from heat-resistant polyimide film with etched copper foil
  • Utilizes a neodymium magnet for extended frequency response, excellent transient characteristics, and high power handling (up to 3,000 mW)

Design and Materials

• Wooden housing (African mahogany)
  • Enhances depth and richness of sound while preserving the delicate expressiveness of the RP diaphragm
• Improved magnetic circuit design
  • Features a new low-carbon yoke material for better magnetic transmission efficiency
  • The RP magnetic circuit ensures symmetrical magnetic flux density distribution, providing excellent linearity in diaphragm movement

Comfort and Ergonomics

• Low-resilience circumaural ear pads
  • Ensures a comfortable fit even during extended listening sessions

Connectivity

• Balanced connection support
  • Equipped with a high-quality OFC conductor cable for high-resolution sound
• Compatible with various balanced cables (sold separately):
  • Φ 2.5 mm: ET-RP2.5BL
  • Φ 4.4 mm: ET-RP4.4BL
  • XLR: ET-RPXLR

Technical Specifications

• Type: Semi-open dynamic
• Transducer: RP planar magnetic
• Frequency response: 15 – 35,000 Hz
• Impedance: 50 Ω
• Sensitivity: 92 dB / mW
• Maximum input power: 3,000 mW
• Weight: Approx. 380 g (cable not included)

Included Accessories

• Cable: 1.5 m Φ 3.5 mm (4-pole) ⇔ Φ 3.5 mm (3-pole) stereo jack
• Adapters and extras:
  • Φ 3.5 mm → Φ 6.3 mm stereo jack adapter
  • Dedicated pouch
  • Sticker
  • User manual and warranty card