Fostex T50RPMK4-CL

The Fostex T50RPmk4CL headphones are the latest evolution in the iconic RP (Regular Phase) series, now offered in a closed-back design to meet the specific demands of studio recording. Built with Fostex's fourth-generation RP planar magnetic driver, these headphones provide the detailed, fast transient response and tonal accuracy that professionals expect-now with enhanced isolation for focused vocal and instrument monitoring.

Designed for versatility and long-session comfort, the T50RPmk4CL features a symmetrical housing that allows the cable to be connected on either side without altering the sound signature. Thick, Ultrasuede-lined ear pads with an angled design enhance both fit and soundstage, delivering a fatigue-free, immersive listening experience. Whether you're in the recording booth or mixing at the desk, these headphones offer a closed-back solution that doesn't compromise the renowned RP sonic integrity.

• Closed-back design ideal for studio recording and sound isolation.

• Features Fostex's 4th generation RP planar magnetic driver for accurate, detailed sound.

• Suppresses ambient noise leakage, perfect for vocal and instrument tracking.

• Offers precise and balanced sound across deep bass to high frequencies.

• Enhanced driver design improves sensitivity and transient response.

• Symmetrical housings allow cable connection on either side for flexibility.

• Includes Ultrasuede earpads with angled design for comfort and better sound staging.

• Supports balanced connections with optional cable (sold separately).

• Comes with an unbalanced 2m cable, 3.5 to 6.3mm adapter, and safety guide.

GENERAL SPECIFICATIONS:

• Model: T50RPmk4CL

• Type: Closed back, Dynamic

• Series: RP Series with 4th Generation RP Technology

• Driver: Proprietary RP planar magnetic regular phase

• Weight: Approximately 330 grams excluding cable

• Manufacturing: In house production by Fostex

PERFORMANCE SPECIFICATIONS:

• Impedance: 28 ohms

• Sensitivity: 97 dB per mW

• Maximum Input Power: 3000 mW

• Frequency Response: 10 Hz to 40000 Hz

DESIGN AND FEATURES:

• Housing: Based on semi open T50RPmk4 design with sound insulating enhancements, Identical internal shape to semi open model for consistent sound balance, Closed back structure for minimal sound leakage during recording

• Earpads: Around ear thick low rebound pads, Covered in Ultrasuede for durability and comfort, Angled pad design enhances soundstage

• Driver Technology Enhancements: Expanded diaphragm area with increased magnets,Redesigned coil pattern and optimized magnetic circuit, Reduced unwanted resonance and improved transient response, Balanced frequency response and spatial accuracy

CABLE CONNECTION:

• Left and right housings support symmetrical cable input

• 4 pole 3.5 mm connectors support optional balanced cable

• Default cable is 2 meters, 4 pole to 3 pole 3.5 mm

• Includes 3.5 mm to 6.3 mm adapter

INCLUDED ACCESSORIES:

• Unbalanced cable 2 meter

• 3.5 mm to 6.3 mm conversion connector

• Safety instructions

USE CASE:

• Ideal for studio vocal and instrument monitoring where sealed housing and accurate sound reproduction are essential. Balanced design and advanced planar magnetic technology ensure professional performance.