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AKG N9 Hybrid vs Sivga Robin Sv021: which should you buy?

On aggregated review scores the AKG N9 Hybrid comes out ahead with a HearWiki score of 86. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: AKG N9 Hybrid - Outstanding overall at around $289.

Score breakdown

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

AKG N9 Hybrid leads on 6 of 7 measures.

  • AKG N9 Hybrid
  • Sivga Robin Sv021
HearWiki score
86
58
Sound
9.0
6.3
Noise cancelling
8.4
-
Battery
9.8
-
Calls
9.1
-
Value
9.0
6.4
Price (USD)
$290
$150

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

AKG N9 Hybrid (2024) against Sivga Robin Sv021 (2021). The AKG N9 Hybrid edges ahead on platform, but only just: ANC type Adaptive against None. It also adds USB-C.

  • N9 Hybrid20243 yr newer
  • Robin Sv0212021
What differsN9 HybridRobin Sv021

Platform

ANC type
Adaptive
None

Everyday features

USB-C
Yes
No

Specifications

N9 HybridRobin Sv021
Type
Over-Ear
Over-Ear
Price (USD)
$290
$150
HearWiki score
86
58
Released
2024
2021
Availability
Still sold new
Still sold new
Driver
40 mm dynamic
50 mm dynamic
Driver type
dynamic
dynamic
Driver size
40 mm
50 mm
Drivers per side
1
1
Frequency response
10 Hz - 40 kHz
20 Hz - 20 kHz
Impedance
32 Ω
32 Ω
Sensitivity
98 dB/mW
105 dB/mW
Bluetooth
5.3
-
Codecs
SBC, AAC, LDAC
-
Multipoint pairing
Yes
-
Battery life
100 h
-
Battery life (ANC on)
55 h
-
Full charge time
180 min
-
Quick charge
10 min → 6 h
-
Wireless charging
No
-
Active noise cancelling
Yes
No
ANC type
adaptive
-
Transparency mode
Yes
-
Companion app
Yes
-
Custom EQ
Yes
-
Wear detection
No
-
Controls
touch
buttons
Voice assistant
Google Assistant, Siri
-
Weight
281 g
275 g
Water resistance
none
-
Detachable cable
-
Yes
USB-C
Yes
No
Pad material
-
protein-leather
Connector
-
3.5 mm
Balanced connection
-
Yes
Microphones
1
-

What reviewers said

AKG N9 Hybrid

The AKG N9 Hybrid is a versatile over-ear headphone that balances detailed, well-controlled sound with strong adaptive noise cancellation and an exceptionally long battery life. It offers modern connectivity including Bluetooth 5.3, multipoint, and LDAC support, plus a comfortable build suited for music, gaming, and movies. Its feature set makes it a practical choice for users who value both performance and endurance.

  • Pro:Very long battery life, even with ANC enabled
  • Pro:Adaptive noise cancelling with customizable options
  • Pro:Support for high-quality LDAC codec
  • Con:No water resistance rating
  • Con:No wireless charging support
  • Con:Only one microphone for calls

Sivga Robin Sv021

The Sivga Robin Sv021 is a wired, closed-back over-ear headphone with a sturdy build and attractive wooden cups, offering a comfortable fit for extended listening. Its sound signature is V-shaped and fun, with emphasized bass and treble, though this tuning can lead to uneven tonality and occasional harshness. It is a versatile, good-value option for casual media and gaming rather than for listeners seeking a neutral or reference sound.

  • Pro:Attractive wood cup design and solid construction
  • Pro:Comfortable fit with protein-leather pads
  • Pro:Detachable cable with balanced option
  • Con:Bass is overly dominant and can overwhelm the mix
  • Con:Treble can become harsh and sibilant on some tracks
  • Con:Lower mids are recessed, affecting vocal presence

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

Compare something else

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New comparisonAKG N9 HybridSivga Robin Sv021