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Audeze Maxwell 2 ANC vs STAX SR-303: which should you buy?

Specs, scores and condensed review verdicts for the Audeze Maxwell 2 ANC vs STAX SR-303, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

Score breakdown

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

Audeze Maxwell 2 ANC leads on 7 of 7 measures.

  • Audeze Maxwell 2 ANC
  • STAX SR-303
HearWiki score
88
-
Sound
9.3
-
Noise cancelling
8.5
-
Battery
8.0
-
Calls
9.0
-
Value
6.5
-
Price (USD)
$430
$600

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?

Half a step newer

Audeze Maxwell 2 ANC (2026) against STAX SR-303 (1999). The Audeze Maxwell 2 ANC edges ahead on platform, but only just: ANC type Adaptive against None. It also adds USB-C.

  • Maxwell 2 ANC202627 yr newer
  • SR-3031999
What differsMaxwell 2 ANCSR-303

Platform

ANC type
Adaptive
None

Everyday features

USB-C
Yes
No

Specifications

Maxwell 2 ANCSR-303
Type
Over-Ear
Over-Ear
Price (USD)
$430
$600
HearWiki score
88
Not scored
Released
2026
1999
Availability
Sold new
Discontinued
Driver
90 mm planar magnetic
electrostatic
Driver type
planar
electrostatic
Driver size
90 mm
-
Drivers per side
1
1
Frequency response
10 Hz - 50 kHz
7 Hz - 41 kHz
Impedance
-
132000 Ω
Sensitivity
115 dB/mW
100 dB/mW
Bluetooth
5.3
-
Codecs
SBC, AAC, LC3, LC3plus, LDAC
-
Multipoint pairing
Yes
-
Battery life
40 h
-
Battery life (ANC on)
35 h
-
Full charge time
120 min
-
Active noise cancelling
Yes
No
ANC type
adaptive
-
Transparency mode
Yes
-
Companion app
Yes
-
Custom EQ
Yes
-
Wear detection
No
-
Controls
both
-
Weight
560 g
295 g
USB-C
Yes
No
Pad material
-
leather
Microphones
2
-
Call noise reduction
Yes
-
Call NR technology
AI ENC
-

What reviewers said

Audeze Maxwell 2 ANC

No summary yet - we haven't aggregated enough reviews.

STAX SR-303

The STAX SR-303 is an electrostatic over-ear headphone that relies on a highly charged thin diaphragm to produce sound, delivering an exceptionally wide frequency range from 7 Hz to 41 kHz. It’s a wired-only model with no noise cancellation, aimed at audiophiles who value transparency and detail over portability or isolation. With a high impedance of 132,000 ohms, it requires a dedicated electrostatic amplifier to perform at its best.

  • Pro:Very wide frequency response (7 Hz–41 kHz) for detailed highs and deep lows
  • Pro:Electrostatic driver offers low distortion and fast transient response
  • Pro:Lightweight design at 295 g for comfortable long listening sessions
  • Con:Requires a special electrostatic amplifier, not compatible with standard headphone jacks
  • Con:No active noise cancellation limits use in noisy environments
  • Con:Wired connection only, so no wireless or USB-C options

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

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