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Black open-back over-ear headphones with detachable cable

Philips

Philips Fidelio X3/00 50mm Open-Back Wired Headphones

SKU CH-FY0Z-JSBBN MPN X3/00

Open-back over-ear headphones with 50 mm neodymium drivers tilted at 15 degrees, 5 Hz to 40 kHz response, 30 ohm impedance, and detachable 3 m oxygen-free cable

  • Driver size50 mm Neodymium
  • Frequency range5 Hz-40 kHz
  • Impedance30 ohms
  • Audio sensitivity100 dB @ 1mW
  • Connection3.5 mm/ 6.3 mm
  • Cord lengthDetachable Oxygen free cable (3m)
  • Open-back design creates a wide, natural soundstage
  • 50 mm neodymium drivers tilted at 15 degrees for optimal accuracy
  • Double-layered ear shells reduce resonance and vibration
  • Detachable oxygen-free cable includes 3.5 mm and 6.3 mm connectors
  • Lightweight 0.84 lb build with memory-foam cushions for extended comfort

Philips Fidelio X3 open-back headphones

The Philips Fidelio X3 are wired over-ear headphones built for critical listening. An open-back architecture creates a wide, natural soundstage suited to audiophile use. Detachable oxygen-free cables with 3.5 mm and 6.3 mm connectors fit portable and desktop sources. Memory-foam cushions and a self-adjusting inner headband keep long sessions comfortable.

Double-layer shells and angled drivers control

Double-layered ear shells reduce unwanted resonance and vibration during extended playback. Neodymium drivers are tilted at 15 degrees to match ear geometry, preserving high-frequency accuracy at realistic volumes. The 30-ohm impedance and 100 dB sensitivity allow clean output from standard headphone amplifiers without distortion buildup over time.

50 mm drivers cover 5 Hz to 40 kHz

Exquisitely tuned 50 mm neodymium drivers deliver a frequency response of 5 Hz to 40 kHz, capturing sub-bass weight and ultrasonic detail. This range decides whether the headphones reveal the full texture of a recording or roll off the extremes. Buyers who need wireless convenience or active noise cancellation should look elsewhere.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $264.99
Pricier than about 91% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand namePHILIPS
Model nameX3/00
Product typeOver the Ear
Audio & video
Driver size50 mm Neodymium
Frequency range5 Hz-40 kHz
Impedance30 ohms
Audio sensitivity100 dB @ 1mW
Ports & slots
Connection3.5 mm/ 6.3 mm
Size & build
Cord lengthDetachable Oxygen free cable (3m)
Product weight0.84 lb (0.38 kg)
Shipping weight1.35 kg
Package size310 × 245 × 122 mm

Questions about this item

How much power do the 30-ohm drivers draw from a portable player during long sessions?

At 30 ohms impedance and 100 dB sensitivity the X3/00 is easily driven by phones or DAPs, so battery drain stays low even after hours of listening.

Which source devices already have the matching 3.5 mm or 6.3 mm jack for the detachable cable?

The package includes a 3 m oxygen-free cable terminated in both 3.5 mm and 6.3 mm plugs, covering most phones, laptops, desktop amps and audio interfaces.

Will the open-back design leak sound into a quiet room shared with older speakers?

Yes — the open-back architecture creates a wide, natural soundstage but allows audio to escape, so people nearby will hear what you are playing.

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