HeadphoneOverreview

Shure AONIC 50 Gen 2

A studio maker's wireless flagship that reviewers praise for detail and build, fault for its noise cancelling — and can't agree on how it's tuned.

28 sourcesUpdated
$378Typical US price

Score aggregates reviewer opinions across topics.

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Shure AONIC 50 Gen 2

The short version

What to know.

A heavy, solidly built wireless noise-cancelling over-ear whose sound quality is widely praised and whose noise cancelling is not. Sources broadly agree that it is clear and detailed, with precise imaging; that it is unusually flexible, with LDAC and aptX Adaptive, analog and USB-C audio and a parametric EQ that most reviewers rate as best-in-class; that its battery lasts close to the 45-hour claim; and that its noise cancelling, though better than the first generation's, trails Sony and Bose — with several reviewers reporting crackle or dropouts over bumps, wind and pressure changes. They split on the tuning: a majority hear an excited, V-shaped default with lifted bass and bright treble around a dipped midrange, while others hear a balanced, accurate studio sound, and one reviewer hears it warm. Soundstage is wide for most but narrow for some; comfort is fine for most but too heavy or firm for others; and while reviewers call it better built than its rivals, a few long-term owners report the headband covering and pads loosening or peeling within months to two years.

About this product

Shure's second-generation AONIC 50 (SBH50G2-BK), on sale since September 2023 in black only. It keeps the 2020 original's frame, pads and 50 mm drivers but adds new noise cancelling, more than double the battery life, Spatializer modes and aptX Adaptive. Not the first-generation AONIC 50, the AONIC 40, or Shure's wired SRH studio headphones.

The Shure AONIC 50 Gen 2 is the second version of the microphone and in-ear-monitor maker's wireless noise-cancelling over-ear, launched in September 2023 at $349 — $50 less than the 2020 original. The outside is almost unchanged: the same aluminium-armed frame, deep leatherette pads and 50 mm drivers, now in all black, with physical buttons and a three-position noise-cancelling slider on the right cup. Inside, Shure added new hybrid noise cancelling, a battery rated at 45 hours instead of 20, three Spatializer modes and every major Bluetooth codec, including LDAC and aptX Adaptive.

It is also one of the few wireless headphones built to be used wired: a 2.5 mm socket takes an analog cable and works with the headphone switched off, and the USB-C port carries audio at up to 32-bit/384 kHz. The ShurePlus PLAY app's parametric equalizer is widely rated among the best in the category — which matters, because many reviewers think the default tuning needs it.

A good fit for

  • Listeners who prioritise clarity, detail and imaging over the strongest noise cancelling
  • People who also want to listen wired — over USB-C from a laptop or phone, or analog from older gear
  • Tinkerers happy to spend a few minutes with a parametric EQ to set the tuning they like
  • Long trips and long days, thanks to its long battery life

Think twice if

  • Noise cancelling for planes, trains or open offices is your top priority — Sony and Bose do better
  • You are sensitive to bright treble and don't want to EQ
  • You want a light or compact headphone — it is heavy and only folds flat
  • You want a wear sensor, touch controls or water resistance

The reviewer consensus

Agreement &
disagreement.

7 / 12topics divide opinion
1 Strong agreement4 Mostly agree7 Divided opinions

Common ground6

  • Clear and detailed, with precise imaging and good instrument separation — most reviewers rank its clarity at or above Sony's WH-1000XM5.
  • The noise cancelling is better than the first generation's but still behind Sony and Bose, and can crackle or distort with jolts, wind and pressure changes.
  • Unusually flexible connections: LDAC, aptX HD and aptX Adaptive, a wired analog input that works with the headphone off, and USB-C audio up to 32-bit/384 kHz.

Points of contention7

  • Tonality: 'excited, V-shaped' vs 'balanced and accurate' vs 'warm' — measurements show lifted bass and treble around a lean lower midrange.
  • Bass: 'emphasised and punchy' vs 'controlled and a little shy in the deepest octave', split evenly.
  • Mids: 'dipped and lean' vs 'clear and full' — the lower mids are lean, the upper mids forward.

A closer listen.

12 topics · 7 divided
Left: criticalRight: positiveTighter lines: more agreement

Tonality

Leans criticalDivided opinions
Reviewer sentiment15 supporting sources
CriticalNeutralPositive

Band: opinion spread · Dot: weighted average

Sources split three ways. The largest group hears an excited, V-shaped default — lifted bass and bright treble around a dipped midrange — that sounds best after a little EQ; a sizeable group hears a balanced, accurate tuning true to Shure's studio reputation; and one reviewer hears it warm, led by the bass and lower midrange.

Measured

On RTINGS' HMS II.3 rig, normalised at 500 Hz, the curve sits about 4–6 dB above RTINGS' target from 100 to 200 Hz, 3–7 dB above it from 1 to 3 kHz and 8–12 dB above it from 5 to 8 kHz (a rig that reads treble high on most headphones). On the same rig it has more energy than the first-generation AONIC 50 at 20 Hz (+7 dB), around 1–1.5 kHz (+3 to +4 dB) and at 6–8 kHz (+3 to +4 dB), and RTINGS calls it less neutral than its predecessor. SoundGuys measures a dip in the midrange against its preference curve; Les Numériques describes lifted bass, a slightly recessed midrange, a lift in the upper mids, a treble dip and a second lift around 10 kHz.

vs. listeners — Both measuring outlets find bumps rather than a flat line, which backs the 'excited' camp; the 'balanced' camp hears the same shape as coherent and well controlled. Two variables move the result: wired listening (What Hi-Fi? and eCoustics found USB-C or analog smoother or more balanced than Bluetooth) and noise cancelling (What Hi-Fi? hears the bass fatten and dynamics shrink with it on). STEREO's lab test called the neutral setting clearly coloured and lacking power.

Where it splits
Balanced and controlled — an accurate, studio-like tuning.35%

“Sans être linéaire, la réponse en fréquence est assez équilibrée et maîtrisée pour apporter une bonne qualité sonore.”

Les Numériques (Guillaume Fourcadier) — "Without being linear, the frequency response is balanced and controlled enough to deliver good sound quality"
Excited or V-shaped — boosted bass and treble around a dipped midrange; needs EQ.58%

“Out of the box, their default sound is pretty excited and isn't very neutral.”

RTINGS
Warm — led by the bass and lower midrange, with restrained highs.7%

“this adjustment was necessary because the sound of these headphones was dominated by the lower mid-range and the bass that followed it.”

headphonecheck.com (Carsten Kaiser)
Link to this topic

The hardware

Specifications.

Checked

Design

Type
Closed-back over-ear
Drivers
1 × 50 mm dynamic (neodymium magnet)
Microphone
Built-in

Electrical

Impedance
39 Ω
Sensitivity
97.5 dB/mW≈ 111.6 dB/V
Frequency response
20 Hz – 22 kHz

Connection

Cable
Detachable, 1.5 m
Connector
2.5 mmcommunity-sourced
Plugs supplied
3.5 mm
Bluetooth
Bluetooth 5SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC
Noise cancelling
Yes
Battery
45 h
USB audio
Yes
Wired input
Yes

Physical

Weight
334 g
Released
2023-09

Manufacturer-published figures, not measurements · from pubs.shure.com (archived), shure.com (archived), thomann.co.uk. Connector not published by the maker — community-sourced from hands-on reviews: whathifi.com, pcmag.com, lesnumeriques.com.

Follow the evidence

Sources 28

1–6 of 28 sources

Read with context

Limitations & method.

As of

What to keep in mind 5

  1. This is a read of where opinion stands as of October 2026, for a headphone that launched in September 2023 — its rivals have moved on since, and most reviews compare it with Sony's WH-1000XM5 and Bose's QuietComfort Ultra.

  2. Many reviewers judged its sound after adjusting the EQ or while listening wired, and several say the default Bluetooth sound differs from both — so expect your impression to depend on how you listen.

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