Over-Ear
Audeze Maxwell 2
88Outstanding
$330
Full review dataAudeze Maxwell 2 vs Harmonicdyne Poseidon: which should you buy?
On aggregated review scores the Audeze Maxwell 2 comes out ahead with a HearWiki score of 88. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Audeze Maxwell 2 - Outstanding overall at around $329.
Over-Ear
Harmonicdyne Poseidon
67Good
$330
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Audeze Maxwell 2 leads on 6 of 6 measures.
- Audeze Maxwell 2
- Harmonicdyne Poseidon
HearWiki score
88
67
Sound
9.5
7.8
Battery
9.5
-
Calls
9.0
-
Value
7.5
4.2
Price (USD)
$330
$330
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 Audeze Maxwell 2 is 5 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 Audeze Maxwell 2 adds USB-C. For 5 years between them, that is a thin return - treat this as a restyle rather than a new platform.
- Maxwell 220265 yr newer
- Poseidon2021
What differsMaxwell 2Poseidon
- USB-C
- Yes
- No
Everyday features
Specifications
Maxwell 2Poseidon
- Type
- Over-Ear
- Over-Ear
- Price (USD)
- $330
- $330
- HearWiki score
- 88
- 67
- Released
- 2026
- 2021
- Availability
- Sold new
- Discontinued
- Driver
- 90 mm planar magnetic
- 50 mm dynamic
- Driver type
- planar
- dynamic
- Driver size
- 90 mm
- 50 mm
- Drivers per side
- 1
- 1
- Frequency response
- 10 Hz - 50 kHz
- 10 Hz - 40 kHz
- Sound signature
- -
- neutral
- Impedance
- -
- 64 Ω
- Sensitivity
- -
- 103 dB/mW
- Bluetooth
- 5.3
- -
- Codecs
- SBC, AAC, LC3, LC3plus, LDAC
- -
- Multipoint pairing
- Yes
- -
- Battery life
- 80 h
- -
- Battery life (ANC on)
- 35 h
- -
- Full charge time
- 120 min
- -
- Active noise cancelling
- Yes
- -
- ANC type
- adaptive
- -
- Transparency mode
- Yes
- -
- Companion app
- Yes
- -
- Custom EQ
- Yes
- -
- Wear detection
- No
- -
- Controls
- buttons
- -
- Weight
- 560 g
- 380 g
- Detachable cable
- -
- Yes
- USB-C
- Yes
- No
- Connector
- -
- 6.35 mm
- Balanced connection
- -
- Yes
- Microphones
- 2
- -
- Call noise reduction
- Yes
- -
- Call NR technology
- AI ENC
- -
What reviewers said
Audeze Maxwell 2
No summary yet - we haven't aggregated enough reviews.
Harmonicdyne Poseidon
The Harmonicdyne Poseidon is a wired, open-back over-ear headphone featuring a 50 mm nickel-coated dynamic driver aimed at delivering clear, low-distortion sound with a neutral signature. Its 64-ohm impedance and 103 dB sensitivity allow it to work well with portable sources, while the detachable cable and included balanced option add versatility. With a solid build, comfortable fit, and generous accessories, it presents strong value in its price range.
- Pro:Clean, neutral sound with high clarity
- Pro:Sturdy and attractive open-back construction
- Pro:Comfortable fit for extended listening
- Con:Open-back design leaks sound and lets in noise
- Con:Requires some power for optimal performance
- Con:Limited to wired connection only
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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