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Focal Bathys MG vs Sennheiser HD 800: which should you buy?

On aggregated review scores the Focal Bathys MG comes out ahead with a HearWiki score of 83. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Focal Bathys MG - Outstanding overall at around $1499.

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Focal Bathys MG leads on 7 of 7 measures.

  • Focal Bathys MG
  • Sennheiser HD 800
HearWiki score
83
76
Sound
9.6
9.2
Noise cancelling
8.4
-
Battery
7.7
-
Calls
7.8
-
Value
6.2
-
Price (USD)
$1,500
$1,800

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

The Focal Bathys MG is 15 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. The platform is level; the newer hardware shows up in convenience features instead - the Focal Bathys MG adds USB-C. For 15 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • Bathys MG202415 yr newer
  • HD 8002009
What differsBathys MGHD 800

Everyday features

USB-C
Yes
No

Specifications

Bathys MGHD 800
Type
Over-Ear
Over-Ear
Price (USD)
$1,500
$1,800
HearWiki score
83
76
Released
2024
2009
Availability
Still sold new
Still sold new
Driver
40 mm dynamic
56 mm dynamic
Driver type
dynamic
dynamic
Driver size
40 mm
56 mm
Drivers per side
1
1
Frequency response
10 Hz - 22 kHz
14 Hz - 44.1 kHz
Impedance
-
300 Ω
Sensitivity
-
102 dB/mW
Sensitivity (dB/Vrms)
-
102
Bluetooth
5.2
-
Codecs
SBC, AAC, aptX, aptX Adaptive
-
Multipoint pairing
Yes
-
Wireless range
15 m
-
Battery life
30 h
-
Battery life (ANC on)
30 h
-
Full charge time
90 min
-
Wireless charging
No
-
Active noise cancelling
Yes
No
Transparency mode
Yes
-
Companion app
Yes
-
Custom EQ
Yes
-
Wear detection
No
-
Controls
buttons
-
Weight
350 g
330 g
Detachable cable
Yes
Yes
USB-C
Yes
No
Connector
USB-C
6.35 mm
Balanced connection
-
Yes
Microphones
8
-

What reviewers said

Focal Bathys MG

The Focal Bathys MG is a premium wireless over-ear headphone that pairs active noise cancellation with a natural, balanced sound signature. It offers robust connectivity options including aptX Adaptive and multipoint, along with a USB-C DAC mode, all wrapped in a comfortable, high-end build. While its sonic performance is top-tier, the steep price tag is its most significant hurdle for many buyers.

  • Pro:Excellent natural and balanced sound quality
  • Pro:Comfortable fit for extended listening sessions
  • Pro:Effective active noise cancellation
  • Con:Very high price point
  • Con:Limited high-resolution wireless codec support
  • Con:No wireless charging option

Sennheiser HD 800

The Sennheiser HD 800 is an open-back, over-ear headphone renowned for its expansive soundstage and exceptional detail, achieved through a large 56 mm dynamic driver and angled transducer design. It delivers a highly neutral, low-distortion frequency response, though it demands a powerful amplifier and offers no noise isolation. While priced at a premium, its reference-grade performance and comfort have made it a benchmark for audiophile listening since 2009.

  • Pro:Expansive, speaker-like soundstage
  • Pro:Exceptional detail and resolution
  • Pro:Very flat, low-distortion response
  • Con:Requires a powerful amplifier; not for portable use
  • Con:Fully open design provides no isolation
  • Con:High price point

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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