Sennheiser HD 599 vs Philips Fidelio X2HR

Which Headphones Are Better?

Products

Sennheiser HD 599
Philips Fidelio X2HR

Tested using Methodology v1.5

Updated Feb 06, 2026 06:21 PM

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Tested using Methodology v1.8

Updated Mar 09, 2026 07:53 PM

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Our Verdict

Sennheiser HD 599

Philips Fidelio X2HR

The Philips Fidelio X2HR are slightly better open-back headphones for neutral sound than the Sennheiser HD 599. The X2HR look and feel better built and have a slightly better-balanced sound profile. On the other hand, the Sennheiser are more comfortable and feel somewhat more stable on the head.

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Variants

  • HD 599 SE (Black)
  • HD 599 (Ivory)
  • Fidelio X2HR (Black)

Check Price

Black
HD 599 SE
SEE PRICE
Amazon.com
Black
Fidelio X2HR
SEE PRICE
Amazon.com
Ivory
HD 599
SEE PRICE
Amazon.com
Black
Fidelio X2HR
SEE PRICE
Walmart.com
 
Black
Fidelio X2HR
SEE PRICE
B&H
 
Black
Fidelio X2HR
BestBuy.com
 
Black
Fidelio X2HR
Philips
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Main Differences for
Neutral Sound

Threshold 

0.10

Neutral Sound 
 

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Full Comparison

Design

Style  

Design Picture 2  

Sennheiser HD 599 Design Picture 2 Sample

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Philips Fidelio X2HR Design Picture 2 Sample

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Type  

Locked
Locked

Enclosure  

Locked
Locked

Wireless  

Locked
Locked

Transducer  

Locked
Locked
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Comfort 
 

N/A
N/A

Comfort Picture  

Sennheiser HD 599 Comfort Picture Sample

SAMPLE

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Philips Fidelio X2HR Comfort Picture Sample

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Weight  

Lock lbs
Lock lbs

Clamping Force 
 

Lock lbs
Lock lbs
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Controls 
 

N/A
N/A

Controls Picture  

Sennheiser HD 599 Controls Picture Sample

SAMPLE

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Philips Fidelio X2HR Controls Picture Sample

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OS Compatibility 
 

Locked
Locked

Ease Of Use  

Locked
Locked

Feedback  

Locked
Locked

Call/Music Control  

Locked
Locked

Volume Control  

Locked
Locked

Microphone Control  

Locked
Locked

Channel Mixing 
 

Locked
Locked

Noise Cancelling Control  

Locked
Locked

Talk-Through 
 

Locked
Locked

Additional Controls  

Locked
Locked
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Breathability 
 

N/A
N/A

Breathability After Picture  

Sennheiser HD 599 Breathability After Picture Sample

SAMPLE

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Philips Fidelio X2HR Breathability After Picture Sample

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Avg.Temp.Difference  

Lock °C
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Portability 
 

N/A
N/A

Portability Picture  

Sennheiser HD 599 Portability Picture Sample

SAMPLE

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Philips Fidelio X2HR Portability Picture Sample

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Lock" (Lock cm)
Lock" (Lock cm)

 

Lock" (Lock cm)
Lock" (Lock cm)

 

Lock" (Lock cm)
Lock" (Lock cm)

Volume  

Lock in³ (Lock cm³)
Lock in³ (Lock cm³)

Transmitter Required  

Locked
Locked
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Case 
 

N/A
N/A

Case Picture  

Sennheiser HD 599 Case Picture Sample

SAMPLE

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Philips Fidelio X2HR Case Picture Sample

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Type  

Locked
Locked

 

N/A
N/A

 

N/A
N/A

 

N/A
N/A

Volume  

N/A
N/A
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Build Quality 
 

N/A
N/A

Build Quality Picture  

Sennheiser HD 599 Build Quality Picture Sample

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Philips Fidelio X2HR Build Quality Picture Sample

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Stability 
 

N/A
N/A

Stability Picture  

Sennheiser HD 599 Stability Picture Sample

SAMPLE

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Philips Fidelio X2HR Stability Picture Sample

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Show Text 

Headshots 1  

Angled Picture  

Sennheiser HD 599 Angled Picture Sample

SAMPLE

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Philips Fidelio X2HR Angled Picture Sample

SAMPLE

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Side Picture  

Sennheiser HD 599 Side Picture Sample

SAMPLE

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Philips Fidelio X2HR Side Picture Sample

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Headshots 2  

Front Picture  

Sennheiser HD 599 Front Picture Sample

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Philips Fidelio X2HR Front Picture Sample

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Rear Picture  

Sennheiser HD 599 Rear Picture Sample

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Philips Fidelio X2HR Rear Picture Sample

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Top  

Top Picture  

Sennheiser HD 599 Top Picture Sample

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Philips Fidelio X2HR Top Picture Sample

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In The Box  

In The Box Picture  

Sennheiser HD 599 In The Box Picture Sample

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Philips Fidelio X2HR In The Box Picture Sample

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Sound

Sound Profile 
 

Sound Profile  

Sennheiser HD 599 Sound Profile Sample

SAMPLE

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Philips Fidelio X2HR Sound Profile Sample

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Normalization Frequency 
 

Lock Hz

Bass Amount 
 

Lock dB
Lock dB

Treble Amount 
 

Lock dB
Lock dB
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Frequency Response Consistency 
 

N/A
N/A

Consistency L  

Sennheiser HD 599 Consistency L Sample

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Philips Fidelio X2HR Consistency L Sample

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Consistency R  

Sennheiser HD 599 Consistency R Sample

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Philips Fidelio X2HR Consistency R Sample

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Avg. Std. Deviation 
 

Lock dB
Lock dB
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Raw Frequency Response 
 

Raw FR L  

Sennheiser HD 599 Raw FR L Sample

SAMPLE

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Philips Fidelio X2HR Raw FR L Sample

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Raw FR R  

Sennheiser HD 599 Raw FR R Sample

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Philips Fidelio X2HR Raw FR R Sample

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Bass Profile: Target Compliance 
 

N/A
N/A

Bass Profile: Target Compliance  

Sennheiser HD 599 Bass Profile: Target Compliance Sample

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Philips Fidelio X2HR Bass Profile: Target Compliance Sample

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RMS Deviation From Target 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

Low Bass 
 

Lock dB
Lock dB

Mid Bass 
 

Lock dB
Lock dB

High Bass 
 

Lock dB
Lock dB
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Mid-Range Profile: Target Compliance 
 

N/A
N/A

Mid-Range Profile: Target Compliance  

Sennheiser HD 599 Mid-Range Profile: Target Compliance Sample

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Philips Fidelio X2HR Mid-Range Profile: Target Compliance Sample

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RMS Deviation From Target 
 

Lock dB
Lock dB

Low Mid 
 

Lock dB
Lock dB

Mid-Mid 
 

Lock dB
Lock dB

High Mid 
 

Lock dB
Lock dB
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Treble Profile: Target Compliance 
 

N/A
N/A

Treble Profile: Target Compliance  

Sennheiser HD 599 Treble Profile: Target Compliance Sample

SAMPLE

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Philips Fidelio X2HR Treble Profile: Target Compliance Sample

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RMS Deviation From Target 
 

Lock dB
Lock dB

Low Treble 
 

Lock dB
Lock dB

Mid Treble 
 

Lock dB
Lock dB

High Treble 
 

Lock dB
Lock dB
Show Text 

Peaks/Dips 
 

N/A
N/A

Peaks/Dips Graph 
 

Sennheiser HD 599 Peaks/Dips Graph Sample

SAMPLE

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Philips Fidelio X2HR Peaks/Dips Graph Sample

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Peaks 
 

Lock dB
Lock dB

Dips 
 

Lock dB
Lock dB
Show Text 

Imaging 
 

N/A
N/A

Group Delay  

Sennheiser HD 599 Group Delay Sample

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Philips Fidelio X2HR Group Delay Sample

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Phase Response Mismatch  

Sennheiser HD 599 Phase Response Mismatch Sample

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Philips Fidelio X2HR Phase Response Mismatch Sample

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Weighted Group Delay 
 

Lock
Lock

Weighted Phase Mismatch 
 

Lock
Lock

Weighted Amplitude Mismatch 
 

Lock
Lock

Weighted Frequency Mismatch 
 

Lock
Lock
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Passive Soundstage 
 

N/A
N/A

PRTF  

Sennheiser HD 599 PRTF Sample

SAMPLE

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Philips Fidelio X2HR PRTF Sample

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PRTF Accuracy (Std. Dev.) 
 

Lock dB
Lock dB

PRTF Size (Avg.) 
 

Lock dB
Lock dB

PRTF Distance 
 

Lock dB
Lock dB

Openness 
 

0.0
0.0

Acoustic Space Excitation 
 

0.0
0.0
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Virtual Soundstage 
 

N/A
N/A

Virtual Soundstage  

Sennheiser HD 599 Virtual Soundstage Sample

SAMPLE

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Philips Fidelio X2HR Virtual Soundstage Sample

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Head Modeling 
 

Locked
Locked

Speaker Modeling 
 

Locked
Locked

Room Ambience 
 

Locked
Locked

Head Tracking 
 

Locked
Locked

Virtual Surround 
 

Locked
Locked
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Weighted Harmonic Distortion 
 

N/A
N/A

Weighted Harmonic Distortion  

Sennheiser HD 599 Weighted Harmonic Distortion Sample

SAMPLE

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Philips Fidelio X2HR Weighted Harmonic Distortion Sample

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WHD @ 90 
 

Lock
Lock

WHD @ 100 
 

Lock
Lock
Show Text 

Test Settings 
 

Firmware 
 

Locked
Locked

Power 
 

Locked
Locked

Connection 
 

Locked
Locked

Codec 
 

Locked
Locked

Test Instrument  

Locked

EQ 
 

Locked
Locked

ANC 
 

Locked
Locked

Tip/Pad 
 

Locked
Locked

Microphone 
 

Locked
Locked
Show Text 
Isolation

Noise Isolation - Full Range 
 

N/A
N/A

Noise Isolation - Full Range Graph  

Sennheiser HD 599 Noise Isolation - Full Range Graph Sample

SAMPLE

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Philips Fidelio X2HR Noise Isolation - Full Range Graph Sample

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Noise Cancelling  

Locked
Locked

Overall Attenuation 
 

Lock dB
Lock dB

Isolation Audio 
 

Bass 
 

Lock dB
Lock dB

Mid 
 

Lock dB
Lock dB

Treble 
 

Lock dB
Lock dB
Show Text 

Noise Isolation - Common Scenarios 
 

N/A
N/A

Noise Isolation - Common Scenarios Graph  

Sennheiser HD 599 Noise Isolation - Common Scenarios Graph Sample

SAMPLE

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Philips Fidelio X2HR Noise Isolation - Common Scenarios Graph Sample

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Airplane Noise Attenuation 
 

Lock dB

Airplane Noise Isolation Audio 
 

Office Noise Attenuation 
 

Lock dB

Office Noise Isolation Audio 
 

Street Noise Attenuation 
 

Lock dB

Street Noise Isolation Audio 
 

Show Text 

Noise Isolation - Voice Handling 
 

Female Voice 1 
 

Male Voice 1 
 

Female Voice 2 
 

Male Voice 2 
 

ANC Wind Handling 
 

ANC Wind Handling Graph  

Sennheiser HD 599 ANC Wind Handling Graph Sample

SAMPLE

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Philips Fidelio X2HR ANC Wind Handling Graph Sample

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ANC Wind Noise 
 

Leakage 
 

N/A
N/A

Leakage  

Sennheiser HD 599 Leakage Sample

SAMPLE

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Philips Fidelio X2HR Leakage Sample

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Leakage Audio 
 

Overall Leakage @ 1ft 
 

Lock dB
Lock dB
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Microphone

Microphone Style 
 

Integrated 
 

Locked
Locked

In-Line 
 

Locked
Locked

Boom 
 

Locked
Locked

Detachable Boom 
 

Locked
Locked

Mic  

Locked
Locked
Show Text 

Recording Quality 
 

N/A
N/A

Microphone Frequency Response  

Sennheiser HD 599 Microphone Frequency Response Sample

SAMPLE

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Philips Fidelio X2HR Microphone Frequency Response Sample

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Recorded Speech 
 

LFE 
 

N/A
N/A

FR Std. Dev. 
 

N/A
N/A

HFE 
 

N/A
N/A

Weighted THD 
 

N/A
N/A

Gain 
 

N/A
N/A
Show Text 

Noise Handling 
 

N/A
N/A

SpNR  

Sennheiser HD 599 SpNR Sample

SAMPLE

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Philips Fidelio X2HR SpNR Sample

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SpNR 
 

N/A
N/A

Noise Gate 
 

Locked
Locked

Speech + Pink Noise Handling 
 

N/A
N/A

Speech + Pink Noise Audio Sample  

Speech + Subway Noise Handling 
 

N/A
N/A

Speech + Subway Noise Audio Sample  

Show Text 
Active Features

Battery 
 

N/A
N/A

Battery Type 
 

Locked
Locked

Continuous Battery Life 
 

N/A
N/A

Additional Charges 
 

N/A
N/A

Total Battery Life 
 

N/A
N/A

Charge Time 
 

N/A
N/A

Power-Saving Feature 
 

Locked
Locked

Audio While Charging 
 

Locked
Locked

Passive Playback 
 

Locked
Locked

Charging Port  

Locked
Locked
Show Text 

App Support 
 

N/A
N/A

App Picture  

Sennheiser HD 599 App Picture Sample

SAMPLE

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Philips Fidelio X2HR App Picture Sample

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App Name  

Locked
Locked

iOS  

Locked
Locked

Android  

Locked
Locked

macOS  

Locked
Locked

Windows  

Locked
Locked

Equalizer 
 

Locked
Locked

ANC Control 
 

Locked
Locked

Mic Control  

Locked
Locked

Room Effects 
 

Locked
Locked

Playback Control 
 

Locked
Locked

Button Mapping  

Locked
Locked

Surround Support 
 

Locked
Locked
Show Text 
Connectivity

Wired Connection 
 

N/A
N/A

Cable Picture  

Sennheiser HD 599 Cable Picture Sample

SAMPLE

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Philips Fidelio X2HR Cable Picture Sample

SAMPLE

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Analog Audio 
 

Locked
Locked

USB Audio 
 

Locked
Locked

Detachable 
 

Locked
Locked

Length 
 

Lock ft (Lock m)
Lock ft (Lock m)

Connector 
 

Locked
Locked

Latency - Analog 
 

Lock ms

Latency - USB 
 

Lock ms
N/A

Recorded Latency 
 

Recorded Latency Connection  

Locked
Show Text 

Bluetooth Connection 
 

N/A
N/A

Bluetooth Version 
 

Locked
Locked

Multi-Device Pairing 
 

Locked
Locked

NFC Pairing 
 

Locked

Quick Pair (Android) 
 

Locked

Quick Pair (iOS) 
 

Locked

Line Of Sight Range 
 

N/A
N/A

Latency - SBC 
 

N/A
N/A

Latency - aptX 
 

N/A
N/A

Latency - aptX Adaptive (High Quality) 
 

N/A

Latency - aptX Adaptive (Low Latency) 
 

N/A

Latency - LDAC 
 

N/A

Recorded Latency 
 

Recorded Latency Codec  

Locked

AAC Support 
 

Locked

PC Latency (aptX HD) 
 

N/A

PC Latency (aptX-LL) 
 

N/A

iOS Latency 
 

N/A

Android Latency 
 

N/A
Show Text 

Wireless Connection (Dongle) 
 

N/A
N/A

Line Of Sight Range 
 

N/A
N/A

Latency - Dongle 
 

N/A
N/A

Recorded Latency 
 

Show Text 

PC Compatibility 
 

Analog 
 

Locked
Locked

Wired USB 
 

Locked
Locked

Non-BT Wireless 
 

Locked
Locked

PlayStation Compatibility 
 

PS4 Analog 
 

Locked
Locked

PS4 Wired USB 
 

Locked
Locked

PS4 Non-BT Wireless 
 

Locked
Locked

PS5 Analog 
 

Locked
Locked

PS5 Wired USB 
 

Locked
Locked

PS5 Non-BT Wireless 
 

Locked
Locked

Xbox Compatibility 
 

Xbox One Analog 
 

Locked
Locked

Xbox One Wired USB 
 

Locked
Locked

Xbox One Non-BT Wireless 
 

Locked
Locked

Xbox Series X|S Analog 
 

Locked
Locked

Xbox Series X|S Wired USB 
 

Locked
Locked

Xbox Series X|S Non-BT Wireless 
 

Locked
Locked
Show Text 

Base/Dock 
 

N/A
N/A

Type 
 

Locked
Locked

USB Input 
 

Locked
Locked

Line In 
 

Locked
Locked

Line Out 
 

Locked
Locked

Optical Input 
 

Locked
Locked

RCA Input 
 

Locked
Locked

Dock Charging 
 

Locked
Locked

Power Supply 
 

Locked
Locked
Show Text 

Check Price

Black
HD 599 SE
SEE PRICE
Amazon.com
Black
Fidelio X2HR
SEE PRICE
Amazon.com
Ivory
HD 599
SEE PRICE
Amazon.com
Black
Fidelio X2HR
SEE PRICE
Walmart.com
 
Black
Fidelio X2HR
SEE PRICE
B&H
 
Black
Fidelio X2HR
BestBuy.com
 
Black
Fidelio X2HR
Philips

Sennheiser HD 599

Philips Fidelio X2HR

Comments

  1. Comparison

Sennheiser HD 599 vs Philips Fidelio X2HR: Main Discussion

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