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Philips Fidelio X1 (X1/28) Premium Open-Back Hi-Fi Over-Ear Headphones Open Box

Fidelio Premium HD High Fidelity Stereo Headphones Open-Back Headset with Large 50mm Drivers

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Stereo Headphones • Pre-Tilted Drivers • 3m OFC Woven Cable • Self Adjustable Airy Hammock • Velour Material

Learn more about the LS-x1-28-OB

We apologize

This item has been discontinued

Product Highlights


Stereo Headphones • Pre-Tilted Drivers • 3m OFC Woven Cable • Self Adjustable Airy Hammock • Velour Material

Description


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Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.

General Features:

  • Professional Over-Ear Hi-Fi Stereo Headphones
  • Large 50mm neodymium drivers for precise range
  • Double layered ear shells prevent resonance and vibration
  • Acoustic open back construction for clear audio playback and increased imagery
  • Self adjustable hammock with 3D mesh for the perfect fit
  • Pre-tilted drivers fit the ears for minimal sound reflection
  • 3m OFC woven cable ensures high quality signal and durability
  • Deluxe memory foam earpads for long-wearing comfort
  • Specially tuned diaphragm maintains uniform sound precision
  • Dedicated cable management clip for tangle-free ease
  • Long Cable allows users the ability to move around and increased freedom in the studio
  • Main Color: Black (Brown Headband)
  • Additional Models Available (Same Series): Philips Fidelio L1 (Semi-Open Over-Ear) , and Philips Fidelio M1/M1i/28 (Closed-Back)
  • 1-year Sonic Electronix Warranty

Product Specifications:

  • Speaker Type: Dynamic Driver
  • Driver Size: 50 mm
  • Acoustic Design: Open-Back Diaphragm
  • Frequency Response: 10 - 40,000 Hz
  • Sensitivity: 100 dB @ 1 mW
  • Maximum Power Input: 500 mW
  • Distortion Level: <0.1% THD (Total Harmonic Distortion)
  • Impedance: 30 Ohm

Whats In The Box

  1. Philips Fidelio X1 Premium Over-Ear Headphones
  2. 1/4" Adapter Plug (6.3 mm to 3.5 mm)
  3. Cable Clip
  4. Owners Manual & Operating Guide

Specifications & Details


Headphone Design
Headphone Type
Enclosed-Ear
Headband Type
Over the Head
Specifically For
Home/Portable
Headphone Application
DJ
Home Hi-Fi
Home/Office
Acoustic Principle
Open
General Features
Noise-Canceling
No
Built-In Microphone
No
Headphone Connection
Corded
Volume Adjustment
No
Audio Features
Driver Type
Dynamic
Impedance
30 ohm
Sensitivity
100 dB
Driver Size
50 mm
Frequency Response
10 - 40000 Hz
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

X1/28-OB

Weight:

2.50lbs

Internal SKU:

LS-x1-28-OB

Internal Product ID:

73752

Product and How-to Videos


  • Differences Between Headphone Acoustic Principles | Open, Closed, & Semi-Open
  • Headphones Based on Musical Preference | What Type of Listener Are You?

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.